Unreferenced date May 2007 A partition is a division of a logical database or its constituting elements into distinct independent parts. Database partitioning is normally done for manageability , optimization ... is in a distributed database management system . Each partition may be spread over multiple nodes, and users at the node can perform local transactions on the partition. This increases ... Current high end relational database management system s provide for different criteria to split the database. They take a partitioning key and assign a partition based on certain criteria. Common criteria are Range partitioning Selects a partition by determining if the partitioning key is inside a certain range. An example could be a partition for all row database rows where the column database ... Database Category Data partitioning Category Database management systems cs Partition datab ze fr ... each with its own Table database tables , Index database indices , and database transaction transaction database log logs , or by splitting selected elements, for example just one table. Horizontal partitioning also see shard database architecture shard involves putting different rows into different ... customers with ZIP codes greater than or equal to 50000 are stored in CustomersWest. The two partition tables are then CustomersEast and CustomersWest, while a View database view with a union might be created ... creating tables with fewer columns and using additional tables to store the remaining columns. Database ... A partition is assigned a list of values. If the partitioning key has one of these values, the partition ... code , code Norway code , code Sweden code , code Finland code or code Denmark code could build a partition ... in a partition. Assuming there are four partitions, the hash function could return a value from ... to a size that can be listed. See also Shard database architecture External links http publib.boulder.ibm.com ... products database options partitioning index.htm Oracle partitioning http msdn.microsoft.com en us ... more details
Wiktionarypar partitionPartition may refer to TOC right Computing Partitiondatabase , the division of a database Disk partitioning , the division of a hard disk drive Logical partition , a subset of a computer s resources, virtualized as a separate computer Mathematics Partition number theory , a way to write a number as a sum of other numbers Multiplicative partition , a way to write a number as a product of other numbers Partition of an interval Partition of a set Partition of unity , a set of functions of a topological space Partition problem , an NP complete problem in computer science Natural science Partition function quantum field theory Partition function statistical mechanics Partition coefficient , a concept in organic chemistry Other uses Partition law , the division of an estate Partition music Partition politics , a change of political borders Partition 1987 film Partition 1987 film Partition 2007 film Partition 2007 film Partition of India Partition of Yugoslavia Folding screen , a piece of furniture The wall of a cubicle workspace See also lookfrom intitle Part disambiguation Section disambiguation Compartment disambiguation Divider disambiguation disambig de Partition es Partici n fr Partition ko it Partizione hu Part ci egy rtelm s t lap nl Partitie sv Partition zh ... more details
Merge from Database administrator date January 2010 A database is a system intended to organize, store ... database management system s, which store database contents, allowing data creation and maintenance, and search and other access. Architecture Database architecture consists of three levels external ... model relational database model that dominates 21st century databases. ref name date31 harvnb Date .... A single database can have any number of views at the external level. The internal level defines how ... of indirection between internal and external. It provides a common view of the database that is uncomplicated ... into a coherent whole. ref name date31 Database management systems Main Database management system A database management system DBMS consists of software that operates databases, providing storage, access, security, backup and other facilities. Database management systems can be categorized according to the database model that they support, such as relational model relational or XML database ... s that access the database, such as SQL or XQuery , performance trade offs, such as maximum scale ... Access, SQL Server, FileMaker,Oracle,Sybase, dBASE, Clipper,FoxPro etc. Almost every database software comes with an Open Database Connectivity ODBC driver that allows the database to integrate with other ... web url http en.wikibooks.org wiki Design of Main Memory Database System Overview of DBMS title Design of Main Memory Database System Overview of DBMS publisher En.wikibooks.org date accessdate 2010 ... DBMS RDBMS include Data Definition Language DDL for defining the structure of the database, Data Control ... , Firebird database server FireBird Python programming language Python . SQL engine This component ... of objects instead of relational rows. Types unreferenced section date January 2011 Analytical database Analysts may do their work directly against a data warehouse or create a separate analytic database ... are the norm. Distributed database These are databases of local work groups and departments ... more details
Partition Plan may refer to The 1947 United Nations Partition Plan for Palestine The 1947 Partition of India The 1947 Partition of Bengal 1947 partition of Bengal dab ... more details
In Microsoft Windows , the system partition and boot partition refer to The system partition is a Partition computing disk partition that contains the boot sector and files such as tt NTLDR tt that are needed for booting Windows XP and earlier. Windows Vista and Windows Server 2008 use a newer boot loader called tt bootmgr tt that replaces tt NTLDR tt and is configured using tt BCDEdit.exe tt . The boot partition is the disk partition that contains the Windows operating system files and its support files, but not any files responsible for booting . The system partition can be different from the boot partition, although they are often on the same partition drive C . Windows setup places the initial system partition based on motherboard BIOS settings. Bitlocker requires a separate, unencrypted system partition for booting . The master boot record is located at physical sector 0, just before the partition table , and is therefore not contained inside any of the logical partitions or volumes. Other operating systems It is interesting to note that in operating systems other than Windows and DOS the definitions of boot partition and system partition are just the opposite the boot partition contains the boot files and the system partitions hold the operating system files. For example, in the standard Linux directory layout Filesystem Hierarchy Standard , boot files such as the kernel , initrd , and boot loader GRUB are mounted at code boot code while operating system files are mounted at code code the root directory these may or may not be separate partitions, but they are mounted in the same hierarchy. See also Windows NT Startup Process Windows Vista Startup Process EFI System Partition References http support.microsoft.com kb 100525 Definition of System and Boot Partition NT http support.microsoft.com kb 314470 Definition of System Partition and Boot Partition XP Category Windows administration Category Booting ... more details
Third Partition can refer to Third Partition of Poland Third Partition of Luxembourg disambig Long comment to avoid being listed on short pages ... more details
Second Partition may refer to Second Partition of Poland Second Partition of Luxembourg disambig Long comment to avoid being listed on short pages ... more details
Partition of Bengal may refer to the partition of the Bengal region during two separate occasions Partition of Bengal 1905 Partition of Bengal 1947 disambig id Pemisahan Benggala zh ... more details
Partition function may refer to Partition function number theory Partition function mathematics , which generalizes its use in statistical mechanics and quantum field theory Partition function statistical mechanics Partition function quantum field theory disambig su Fungsi partisi ... more details
First Partition and similar can mean First Partition of Poland , 1772 First Partition of Luxembourg , 1659 First Partition Treaty , signed on 11 October 1698 between England and France Primary partition , of a computer hard disk disambig ... more details
The term partition table is most commonly associated with partition table master boot record but it may be used generically to refer to other formats that divide a disk drive into disk partition partitions , such as GUID Partition Table , Apple partition map , ref The pdisk utility for Apple Partition Maps is described as an Apple partition table editor in its man page http developer.apple.com mac library DOCUMENTATION Darwin Reference ManPages man8 pdisk.8.html . ref or BSD disklabel . ref The Solaris documentation on disklabels http docs.sun.com app docs doc 805 7228 6j6q7uet6?a view uses the term partition table . ref An alternative term to generically refer to partition table is partition map . References references See also Disk partitioning Master boot record DEFAULTSORT Partition Table Category Disk file systems compu storage stub de Partitionstabelle fr Table de partitionnement ... more details
Image GParted.png thumb 300px GParted is a popular partition editor A partition editor also called partitioner or partitioning utility is a kind of utility software designed to view, create, alter and delete Partition computing disk partitions on a computer storage device, most commonly a hard disk , but often a USB flash drive or other storage medium. A partition is a section or segment of the storage space on a storage device. By partitioning a large device into several partitions it is possible to isolate various types of data from one another, and allow the coexistence of two or more operating systems simultaneously. A drive can be partitioned into multiple partitions, or have many combined into one. Partition editing programs can be used to shrink a single partition to make room for more or combine two to increase the space on one. See also Disk partitioning List of disk partitioning software Resources http www.partedmagic.com Parted Magic Bootable OS on CD with an emphasis on partition editing. http gparted.sourceforge.net GParted Gnome Partition Editor. Available for Linux, or as standalone bootable CD USB flash versions. Partition Table Editor included with PartitionMagic available as ftp ftp.symantec.com public english us canada tools pq utilities PTEDIT32.zip PTEDIT32.zip from Symantec s FTP site. Category Utility software software type stub es Editor de particiones simple Partition editor ... more details
File Partition of India en.svg thumb The Partition of India Colonial India The Partition of India lang ... Bh rat d ban v r was the Partition politics partition of British Raj British ... of India later India Republic of India . The partition was promulgated in the Indian Independence Act 1947 and resulted in the dissolution of the British Indian Empire . The partition displaced up to 12.5 ... nature of the partition created an atmosphere of mutual hostility and suspicion between India and Pakistan that plagues Indo Pakistani relations their relationship till this day. The partition of India included the geographical Partition of Bengal 1947 division of the Bengal province of British India into East Pakistan and West Bengal India , and the similar partition of the Punjab British India ... Territory and East Punjab later the Punjab India Indian Punjab , Haryana and Himachal Pradesh . The partition ... railways , and the central treasury. In the aftermath of Partition, the princely state s of India ... en 1 Revised Statute from The UK Statute Law Database Indian Independence Act 1947 c.30 at opsi.gov.uk ... opposed the partition of India ref Nasim Yousaf Hidden Facts Behind British India s Freedom A Scholarly ... the partition, saying, cquote My whole soul rebels against the idea that Hinduism and Islam represent ... Muslim nationalists. Gandhi was assassinated soon after Partition by Hindu nationalist Nathuram ... India and Bengal , the pressure increased to seek a political partition of territories as a way to avoid ... of a confederated India. Some historians believe Jinnah intended to use the threat of partition as a bargaining ... , Khaksar Tehrik , and Unionist Muslim League mainly in the Punjab . The Partition 1947 Mountbatten ... the partition arrangement. The Government of India Act 1935 was adapted to provide a legal framework for the two new dominions. Following partition, Pakistan applied for membership of the United Nations ... of the partition the Radcliffe Line See Radcliffe Line The Punjab &mdash the region of the five ... more details
This article is in Commonwealth English In chemistry and the pharmaceutical sciences , a partition P ... phases of a mixture of two immiscible solvent s at Partition equilibrium equilibrium . ref name Leo cite journal author Leo A, Hansch C, and Elkins D title Partition coefficients and their uses journal ... liquid partition coefficient and air water partition coefficient are sometimes used for dimensionless ... of the compound between these two solvents. The phrase Partition Coefficient is now considered obsolete by IUPAC, and partition constant, partition ratio, or distribution ratio, are all more appropriate ... 0 86542 684 8 oclc doi 10.1351 goldbook url accessdate chapter Partition Coefficient chapterurl http ... Water Partition Coefficients Fundamentals and Physical Chemistry, Vol. 2 of Wiley Series in Solution ... ref Hence both the partition and distribution coefficient are measures of how hydrophilic water loving or hydrophobic water fearing a chemical substance is. A partition coefficient can also be used when one or both solvents is a solid solution solid though. In medical practice, partition coefficients ... the body. Hydrophobic drugs with high partition coefficients are preferentially distributed to hydrophobic compartments such as lipid bilayers of cells while hydrophilic drugs low partition coefficients preferentially are found in hydrophilic compartments such as Blood plasma blood serum . Partition coefficient and log P The partition coefficient is a ratio of concentrations of un Ionization ionized compound between the two solutions. To measure the partition coefficient of ionizable solutes ... to partition into the lipid bilayer, but not so hydrophobic, that once it is in the bilayer, it will not partition ... impact. Metallurgy In metallurgy , the partition coefficient is an important factor in determining ... more friendly in the research phase. In the field of hydrogeology , the octanol water partition coefficient ... thumb Two phase system, hydrophobic top and hydrophilic bottom for measuring the partition coefficient ... more details
In mathematics , a partition of an interval mathematics interval a , b on the real number real line is a finite sequence of the form a x sub 0 sub x sub 1 sub x sub 2 sub ... x sub n sub b . Such partitions are used in the theory of the Riemann integral , the Riemann Stieltjes integral and the regulated integral . A refinement of a partition , P , is another partition, Q , of the given interval that contains all the points of P and possibly some other points as well the partition Q is said to be &ldquo finer&rdquo than P . Given two partitions, P and Q , one can always form their common refinement , denoted P &or Q , which consists of all the points of P and Q , re numbered in order. The norm or mesh of the partition x sub 0 sub x sub 1 sub x sub 2 sub ... x sub n sub is the length of the longest of these subintervals, that is max x sub i sub &minus x sub i &minus 1 sub i 1, ..., n . As finer partitions of a given interval are considered, their mesh approaches zero and the Riemann sum based on a given partition approaches the Riemann integral . A tagged partition is a partition ... words, a tagged partition is a partition together with a distinguished point of every subinterval its mesh is defined in the same way as for an ordinary partition. It is possible to define a partial order on the set of all tagged partitions by saying that one tagged partition is bigger than ...,x n math together with math scriptstyle t 0, ldots,t n 1 math is a tagged partition of math a, b ... 1 math is another tagged partition of math a,b math . We say that math scriptstyle y 0, ldots,y m math and math scriptstyle s 0, ldots,s m 1 math together is a refinement of a tagged partition math scriptstyle ... r i le j le r i 1 1 math . Said more simply, a refinement of a tagged partition takes the starting partition and adds more tags, but does not take any away. See also Regulated integral Riemann ... pt Parti o de um intervalo ru fi V lin jako sv Partition av ett intervall uk ... more details
improverefs date December 2007 In political science politics , a partition is a change of political border ... Brendan O Leary, http www.ucd.ie ibis filestore wp2006 78 78 bol.pdf DEBATING PARTITION JUSTIFICATIONS ... that partition is inevitable, or already in progress ref name bol last resort that partition should ... fail ref name bol cost benefit that partition offers a better prospect of conflict reduction than the if existing borders are not changed ref name bol better tomorrow that partition will reduce current ... to accept the idea of partition in deeply divided societies Examples Notable examples see also Category Partition politics are Partition, multiple times, of the Roman Empire into the Eastern Roman Empire and the Western Roman Empire , following the Crisis of the Third Century . Partition of Prussia ... of Prussia 22 1525 ref Partition of Catalonia by the Treaty of the Pyrenees in 1659 Northern ... Second Treaty of Versailles , France agreed upon the partition of Prussia ref Arthur Hassall, The Balance ... 22 Versailles&sig YaLc2R34uXlfZrJBgvXV7eW3LQ8 ref Partition of the United States during the American Civil War . Partition of Prussia in 1919 ref Norman Davies God s Playground http books.google.com ... Agreement of 1938 Partition and Elimination ref Samuel Leonard Sharp Poland, White Eagle on a Red ... Partition of Prussia 1919&pgis 1 search ref Three Partitions of Luxembourg , the last of which in 1839 ... referring to events of 19th and 20th centuries Partition of Bengal 1905 1905 Partition of Bengal and Partition of Bengal 1947 1947 Partition of Bengal Partition of German Tyrol Tyrol by the London Pact of 1915 Partition of the German Empire in 1919 by the Treaty of Versailles Partitioning of the Ottoman Empire Partition of the Ottoman Empire Partition of the Austrian Hungarian Empire in 1919 by the Treaty of St. Germain Partition of Ireland in 1920 into the independent Irish Free State and British ... of Turkey and the then Soviet Union Western and Eastern Armenia Partition of Germany and Berlin after ... more details
refimprove date January 2008 Property law A partition is a term used in the law of real property to describe ... division. A sole owner, or several owners, of a piece of land may partition its their land by entering a Deed poll sometimes referred to as carving out . There are three kinds of partition which can be awarded by court partition in kind , partition by allotment , and partition by sale . A partition in kind is a division of the property itself among the co owners. In a partition by allotment ... awarded. Partition by sale constitutes a forced sale of the land, followed by division of the profits thus realized among the tenants. Generally, the court is supposed to order a partition ... prohibiting partition will not be given effect, but courts will enforce a provision that temporarily restricts partition, as long as the restriction is reasonable. Statutory variations Ontario, Canada Code The Ontario Partition Act, R.S.O. 1990, c. P.4, states 3. 1 Any person interested in land ... bring an action or make an application for the partition of such land or for the sale thereof under ... interested. R.S.O. 1990, c. P.4, s. 3 1 . Florida Code Florida provides for partition actions by statute, which basically provides that any co owner of real estate may seek partition. ref name ... Partition Statute ref In Florida, there are basically no defenses to a partition action, other than if the parties have agreed not to partition the real estate. ref name partition http www.floridaprobatetrustlaw.com 2009 12 articles florida homestead partition can be the solution for florida heirs Partition Can Be the Solution for Florida Heirs ref Pennsylvania Code blockquote blockquote Property ... in common, subject to payment to the parties desiring partition and sale of the amounts of their respective ... upon the property, to be paid in such manner and time as the court shall direct. Partition Example ... the purchase price. In a partition action, the Plaintiff sought credit for the full amount of his ... more details
Unreferenced date July 2009 In mathematics , a partition of unity of a topological space X is a set of Continuous function topology continuous function s, math rho i i in I math , from X to the unit interval 0,1 such that for every point, math x in X math , there is a neighbourhood mathematics neighbourhood of x where all but a finite set finite number of the functions are 0, and the sum of all the function values at x is 1, i.e., math sum i in I rho i x 1 math . Sometimes, the requirement is not as strict the sum of all the function values at a particular point is only required to be positive rather than a fixed number for all points in the space Image Partition of unity illustration.svg center thumb 500px A partition of unity of a circle with four functions. The circle is unrolled to a line segment the bottom solid line for graphing purposes. The dashed line on top is the sum of the functions in the partition. Partitions of unity are useful because they often allow one to extend local constructions to the whole space. The existence of partitions of unity assumes two distinct forms Given any open cover U sub i sub sub i I sub of a space, there exists a partition sub i sub sub i I sub indexed over the same set I such that Support mathematics supp sub i sub U sub i sub . Such a partition ... U sub i sub sub i I sub of a space, there exists a partition sub j sub sub j J sub indexed over a possibly ... is a necessary condition to guarantee the existence of a partition of unity. Depending on the category ... do not exist. See analytic continuation . Applications A partition of unity can be used to integrate ... in a single coordinate patch of the manifold, and then using a partition of unity admissible to a cover ... External links http mathworld.wolfram.com PartitionofUnity.html General information on partition of unity at Mathworld http planetmath.org encyclopedia PartitionOfUnity.html Applications of a partition of unity at Planet Math DEFAULTSORT Partition Of Unity Category Differential topology Category Topology ... more details
unreferenced date January 2008 History of Vietnam The Partition of Vietnam was the establishment of the 17th parallel north 17th parallel as the Vietnamese Demilitarized Zone in 1954, splitting Vietnam into halves after the First Indochina War . The Geneva Conference 1954 Geneva Conference was held at the conclusion of the First Indochina War. As part of the post war settlement announced on July 21, 1954, Vietnam was temporarily Partition politics partition ed into northern and southern zones pending unification on the basis of internationally supervised free elections to be held in 1956. The elections were never held. The North Vietnam Democratic Republic of Vietnam in the north, controlled by Ho Chi Minh and the Viet Minh since the August Revolution in 1945, became formally recognized in the international communities as a separate Sovereign state state . The capital was Hanoi . The south under Emperors of Vietnam Emperor B o i became the State of Vietnam , commonly known as South Vietnam , with its capital at Saigon . The International Control Commission was formed to supervise the ceasefire and implementation of the Geneva Accords which included universal elections over the whole of Viet Nam. With the failure to implement universal elections to end temporary partitioning of the country conflict between the new States of north and the south commenced and soon developed into the Vietnam War American Vietnam War . See Background to the Vietnam War . Need a paragraph or two here to describe the mass migration after the partition, political instability in the south, economic ... public holiday in Vietnam . See also History of Vietnam Partitions of Poland Partition of India Partition of Ireland 1947 UN Partition Plan for Palestine Northern and southern Vietnam Category First Indochina War Category Vietnam War Category 20th century in Vietnam Category Partition politics Category ... stub Vietnam war stub fr Partition du Vi t Nam pt Parti o do Vietn ... more details
Image Set partition.svg right thumb A partition of a set into 6 parts an Euler diagram representation In mathematics , a partition of a Set mathematics set X is a division of X into non overlapping and non ... exhaustive and mutually exclusive with respect to the set being partitioned. Definition A partition ... of these subsets. Equivalently, a set P of nonempty sets is a partition of X if The union set theory ... math is the empty set . The elements of P are called the blocks, parts or cells of the partition. ref name brualdi44 45 Brualdi, pp . 44 45 ref Examples Every singleton set x has exactly one partition, namely x . For any nonempty set X , P X is a partition of X . For any non empty proper subset A of a set U , this A together with its complement set theory complement is a partition of U . The set ... are not partitions of 1, 2, 3 , 1,3 , 2 is not a partition because one of its elements is the empty set . 1,2 , 2, 3 is not a partition of any set because the element 2 is contained in more than one distinct subset. 1 , 2 is not a partition of 1, 2, 3 because none of its blocks contains 3 however, it is a partition of 1, 2 . Partitions and equivalence relations For any equivalence relation on a set X , the set of its equivalence class es is a partition of X . Conversely, from any partition ... part in P . Thus the notions of equivalence relation and partition are essentially equivalent. ref name schechter54 Schechter, p . 54 ref Refinement of partitions Any partition of a set X is a refinement of a partition of X and we say that is finer than and that is coarser than ... lattice . For the simple example of X 1, 2, 3, 4 , the partition lattice has 15 elements and is depicted ... has two equivalence classes the sets red cards and black cards . The 2 part partition corresponding ... equivalence classes spades , diamonds , hearts , and clubs . Noncrossing partitions A partition of the set N 1, 2, ..., n with corresponding equivalence relation is noncrossing partition noncrossing ... more details
unreferenced date December 2010 pH partition is the tendency for acid s to accumulate in basic fluid compartment s, and chemical base bases to accumulate in acidic compartments. The reason for this phenomenon is that acids become negatively electric charge d in basic fluids, since they donate a proton . On the other hand, bases become positively electric charged in acid fluids, since they receive a proton. Since electric charge decrease the membrane permeability of substances, once an acid enters a basic fluid and becomes electrically charged, then it cannot escape that compartment with ease and therefore accumulates, and vice versa with bases. DEFAULTSORT Ph Partition Category Acid base chemistry biochemistry stub ... more details
context date September 2008 Unreferenced date March 2008 The most common chemical equilibrium systems involve reactants and products in the same phase either all gases or all solutions. However, it is also possible to get equilibria between substances in different phases, such as two liquids that do not mix are immiscible . Partition equilibria are described by Nernst law. Example For example, ammonia NH sub 3 sub is soluble in both water aq and the organic solvent trichloromethane CHCl sub 3 sub two immiscible solvents. If ammonia is first dissolved in water, and then an equal volume of trichloromethane is added, and the two liquids shaken together, the following equilibrium is established K sub c sub NH sub 3 sub sub CHCl3 sub NH sub 3 aq sub where K sub c sub is the equilibrium constant The equilibrium concentrations of ammonia in each layer can be established by titration with standard acid solution. It can thus be determined that K sub c sub remains constant, with a value of 0.4 in this case. Partition coefficient main Partition coefficient This particular kind of equilibrium constant measures how a substance distributes or partitions itself between two immiscible solvents. It is called the partition coefficient or distribution coefficient. Polar and non polar substances Substances that are Ionic compound ionic or Chemical polarity polar are more soluble in water than in non polar organic solvents and vice versa. Partition equilibrium chromatography Partition equilibrium chromatography is a type of chromatography that is typically used in gas chromatography GC and high performance liquid chromatography HPLC . The Stationary phase chemistry stationary phase in GC is a high boiling liquid bonded to solid surface and the mobile phase is a gas. See also Liquid liquid extraction Category Equilibrium chemistry Category Chromatography Category Gas chromatography chemistry stub ... more details
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