Mainframe I O access methods Virtual storage access method VSAM is an IBM disk file storage access method ... a record oriented filesystem , VSAM comprises four data set IBM mainframe data set organizations ... added later to VSAM simply contains a sequence of pages with no intrinsic record structure, for use ... , and Direct access storage device DASD because it supported other devices similar to disk drives . VSAM ... so, when a VSAM data set is defined, an integral number of Control Areas will be allocated. The Access ... delete and define VSAM data sets. Custom programs can access VSAM datasets through Data ... on top of VSAM and use its underlying data structure s. VSAM files The physical organization of VSAM data sets differs considerably from the organizations used by other access methods. VSAM data sets .... You can use three types of record orientated file organization with VSAM the contents of linear data sets have no record structure Sequential VSAM organization see Entry Sequenced Data Set Indexed VSAM organization see Key Sequenced Data Set A KSDS has two parts the index component and the data ... is nowadays known as a B tree . Relative VSAM organization see Relative Record Data Set VSAM Data Access Techniques There are three types of access technique for VSAM data Local Shared Resources LSR ... NSR access has historically been easier to use than LSR for batch programs. Sharing VSAM data Sharing of VSAM data between CICS regions can be done by VSAM Record Level Sharing RLS . This adds record ... of CICS which means that sharing of VSAM data outside a CICS environment is severely restricted. Sharing between CICS regions and batch jobs requires Transactional VSAM , DFSMStvs. This is an optional program that builds on VSAM RLS by adding logging and two phase commit, using underlying z OS system services. This permits generalised sharing of VSAM data. History VSAM was introduced as a replacement ... problems of performance and device dependence. VSAM was introduced in the 1970s when IBM announced ... more details
An Entry Sequenced Data Set ESDS is a type of data set used by the VSAM computer data storage system. Records are accessed based on their sequential order, that is, the order in which they were written to the file which means that accessing a particular record involves searching all the records Sequential access sequentially until it is located, or by using a relative physical address Relative byte address , RBA , i.e. the number of bytes from the beginning of the file to start reading. See also Key Sequenced Data Set Relative Record Data Set Random access References http www.auditmypc.com acronym ESDS.asp http www.jaymoseley.com hercules vstutor vstutor.htm http www.mvsforums.com techfaqsvsam.html Category Computer file systems Compu storage stub es Relative Record Data Set nl Entry Sequenced Data Set ... more details
Unreferenced stub auto yes date December 2010 Mainframe I O access methods Object access method is an access method under z OS which is designed for the storage of large numbers of large files, such as images. It has a number of distinguishing features, e.g. compared to Virtual storage access method VSAM OAM datasets do not have any record structure, they are binary streams OAM datasets are not directly catalogued. Rather, they are stored into OAM collections, with only the OAM collection being catalogued. The reason for this is to prevent the catalogue from being overloaded with large number of e.g. image files. OAM is meant to be used in conjunction with IBM DB2 DB2 . An example use case for OAM would be storing medical images in a DB2 database running under z OS. compu storage stub mainframe compu stub Category IBM Mainframe computer operating systems de Object access method ... more details
A Key Sequenced Data Set KSDS is a type of data set used by the IBM VSAM computer data storage system. Each record in a KSDS data file is embedded with a unique key. A KSDS consists of two parts, the data component and a separate index file known as the index component which allows the system to physically locate the record in the data file by its key value. Together, the data and index components are called a cluster. Records can be accessed randomly or in sequence and can be variable length. As a VSAM data set, the KSDS data and index components consist of control intervals which are further organized in control areas. As records are added at random to a KSDS, control intervals fill and need to be split into two new control intervals, each new control interval receiving roughly half of the records. Similarly, as the control intervals in a control area are used up, a control area will be split into two new control areas, each new control area receiving roughly half the control intervals. While a basic KSDS only has one key the primary key , alternate indices may be defined to permit the use of additional fields as secondary keys. An alternate index is itself a KSDS. See also Entry Sequenced Data Set Relative Record Data Set External links http www.lascon.co.uk d002303.htm Lascon.co.uk http www.redbooks.ibm.com redbooks SG246105 wwhelp wwhimpl js html wwhelp.htm Redbooks.ibm.com Compu storage stub Category Computer file systems es Key Sequenced Data Set nl Key Sequenced Data Set ... more details
Jay Ranade , is a bestselling computer book author and information technology IT management consultant, and also a World Power Breaking martial arts Breaking Champion. just guessing at context Ranade s first computer book was VSAM Concepts, Programming, and Design . It is widely regarded as the definitive volume on Virtual storage access method VSAM , a data management system introduced by IBM in the 1970s. The success of this book lead to Ranade being named editor in chief for the J. Ranade IBM Series of books, by McGraw Hill which cover most mainframe computer topics. ref cite web url http web.ncf.ca ac255 os390.html title MVS, OS 390, and zOS ref He has written and published more than 35 IT related books on various subjects like networks, security, operating system s, languages, and systems. He has written and published articles for various computer magazine s such as Byte magazine Byte , LAN Magazine , and Enterprise Systems Journal . The New York Times critically acclaimed his book The Best of Byte . ref cite news url http query.nytimes.com gst fullpage.html?res 9A03E7DE153AF932A35750C0A962958260&sec &spon &pagewanted print title Peripherals The Bytes Of the Past Emerge As a Book newspaper New York Times first L. R. last Shannon accessdate 2010 05 06 ref Jay Ranade now leads TechnoDyne University, ref cite web url http www.TechnodyneUniversity.com title TechnoDyne University ref a division of TechnoDyne LLC. ref cite web url http www.technodyne.com title TechnoDyne LLC ref References Reflist Persondata Metadata see Wikipedia Persondata . NAME Ranade, Jay ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Ranade, Jay Category American technology writers Category Year of birth missing living people Category Living people compu bio stub US nonfiction writer stub ... more details
Primary sources date November 2009 Notability date November 2009 Modified Indirect Data Address Words MIDAWs are a channel I O channel programming capability of the System z9 IBM System z9 processor. ref IBM z Architecture Principles of Operation, publication number SA22 7832 ref The MIDAW facility is an extension to the pre existing Indirect Data Address Word IDAW channel programming capability, providing support for more efficient FICON channel programs. MIDAWs allow ECKD channel programs to read and write to many storage locations using one channel command, which means fewer signals up and down the channel are required to transfer the same amount of data. This reduction is particularly noticeable for Extended Format data set IBM mainframe data sets , accessed through Media Manager. Examples include Extended Format Sequential data sets, Extended Format VSAM data sets and certain types of IBM DB2 DB2 tablespaces. While each of these data set organizations have alternatives, each has a distinct set of advantages, whether in the area of performance, space saving through hardware assisted data compression , or scalability by allowing an individual data set to exceed 4 GiB . References Reflist DEFAULTSORT Ibm Midaw Category IBM mainframe technology ... more details
method VSAM Virtual Storage Access Method . Still later, IBM developed IBM DB2 DB2 which, as of 2004, IBM promotes as their primary database management system . VSAM is the physical access method ... more details
, and Hierarchical Indexed Sequential HISAM . Full function databases store data using VSAM , a native ... 0738453439. Retrieved on June 21, 2008. ref Fast path DEDBs can only be built atop VSAM. DL I databases can be built atop either VSAM or OSAM, with some restrictions depending on database organization. Although the maximum size of a z OS VSAM dataset increased to 128 TB a few years ago, IMS still limits a VSAM dataset to 4 GB and OSAM to 8 GB . This limitation simply means that IMS customers will use multiple datasets for large amounts of data. VSAM and OSAM are usually referred to as the access ... more details
compile on a VSAM KSDS file SIMON Batch Interactive test debug , kept symbolic information from compile on a VSAM KSDS file Debugging data format DEFAULTSORT Debug Symbol Category Debugging Compu prog ... more details
Cleanup date December 2010 Cleanup date December 2010 Unreferenced date September 2008 SMP E System Modification Program Extended is a standard utility used in conjunction with IBM s z OS operating system . SMP E is the common installation tool for managing operating system components and middleware on z OS. The tool manages multiple software versions, helps apply patches and updates, facilitates orderly testing and if necessary reversion to a previous state, allows a trial run pseudo installation to verify that actual installation will work, keeps audit and security records to assure only approved software updates occur, and otherwise provides highly evolved, centralized control over all software installation on z OS. Although it is possible to design and ship software products that install on z OS without SMP E, most mainframe administrators prefer SMP E enabled products, at least for non trivial packages. Using SMP E typically requires some working knowledge of Job Control Language JCL , although most products supply sample JCL. The rigorous software management discipline associated with SMP E typically extends to product documentation as well, with IBM and other vendors supplying a standardized Program Directory manual for each software product that precisely aligns with the SMP E work processes. The Program Directory provides detailed information on pre requisites and co requisites, for example. Commands To add the description of the commands REQUEST REJECT ACCEPT APPLY RESTORE Internal referencing To add the principles via Computer Systems Integration CSI , the KSDS VSAM External links http www.ibm.com systems z os zos smpe IBM SMP E DEFAULTSORT Smp E Category IBM Mainframe computer operating systems ru SMP e ... more details
IBM s Scalable Architecture for Financial Reporting SAFR is an enterprise reporting system that relies on an IBM mainframe as its core, high performance engine. It is a data warehousing ETL tool with either a CICS based traditional 3270 or Web graphical user interface . SAFR can access multiple types of mainframe based data, including IBM DB2 DB2 . For example, it can read sequential files based on the input format specified, then look up certain fields in a VSAM file or in another sequential file. SAFR can produce output in yet another format with some additional calculations, as required. The entire process is called a VIEW, and any number of VIEWs can be defined. SAFR also commonly processes data from other platforms that are fed into its engine. IBM markets and sells SAFR through its IBM Global Services division, typically with customer specific services. The product solves unique business intelligence problems for extremely large operational databases, especially in insurance and financial industries. It traces its roots to a technology called GenevaERS, created by PricewaterhouseCoopers Consulting as part of their practice. IBM acquired PwC Consulting in 2002. SAFR is also popular among SAP AG SAP users, including manufacturing companies, with large databases and significant reporting needs. Despite its name, SAFR is not confined to financial industry roles. SAFR uses a single pass I O approach and takes advantage of the IBM mainframe s extreme parallelism to create multiple reports concurrently. The software is extremely CPU efficient, with an internal capability to execute report queries using generated, high performance System z assembler code. Most SAFR users run reports daily, overnight, during a batch window , but jobs can run at any time, including concurrently and without disruption to online workloads. SAFR is able to exploit zIIP s. See also z OS External links http www.ibm.com systems safr IBM Scalable Architecture for Financial Reporting Category I ... more details
, and offered similar facilities with several additions, e.g., RES, virtual memory. VSAM see below ... number of Tasks MVT plus virtual memory and VSAM see below . ref name AuslanderJaffeIBMVSOSsDAT ... for OS VS1 see above . VSAM IBM hoped that Virtual storage access method VSAM would replace its earlier ... VSAM Demystified ref ref name JayMoseleyVSAMTutorial http www.jaymoseley.com hercules vstutor vstutor.htm VSAM Tutorial ref Entry Sequenced Datasets ESDS provide facilities similar to those of both ... failure in the middle of an index update might corrupt the index. VSAM provided an ISAM VSAM Interface which allowed ISAM based applications to use VSAM KSDS without reprogramming. ref http www.jaymoseley.com hercules isam vsam.htm ISAM VSAM Interface ref Relative Record Datasets RRDS are a replacement ... a relative record number. Unlike ESDS and KSDS, RRDS does not support variable length records. These VSAM ... IMS VS and IBM DB2 DB2 usually ESDS for the actual data storage and KSDS for indexes. VSAM also ... which disk drive s they are on. VSAM datasets must be defined in a VSAM catalog before they are used, and non VSAM datasets can also be listed in a VSAM catalog. The MVS Master Catalog must be a VSAM ... more details
IAM may refer to Concepts Identity and Access Management , a concept that combines business processes, policies and technologies. Innovation Access Method , a high performance indexed access method for IBM s z OS and OS 390 operating systems that provides a transparent alternative to IBM s Virtual storage access method VSAM Indo Aryan migration , the theory that speakers of Indo Aryan languages migrated into the Indian subcontinent during the 2nd millennium BCE Interest at Maturity , a type of financial instrument where proceeds get paid received at the end of the deal IAMS , the brand name for dog food and cat food manufactured by Procter & Gamble. Procter & Gamble acquired the Iams Company in September 1999. Groups Maroc Telecom Arabic transliteration Ittisalat Al Maghrib , the main telecommunication company in Morocco IAM band , a France French rap band from Marseille , formed in 1989 IAM Institut Africain de Management African Institute for Management , first high level business school in Senegal Dakar International Association of Machinists and Aerospace Workers , a North American labor union Institute of Advanced Motorists , a charity based in the UK with the objective of improving car driving and motorcycle riding standards Institute of Asset Management , a professional body for asset managers. IAM INC , a corporation based in Montreal, Canada started by a 13 year old in 1997. Today IAM Inc has 9 subdivisions and has purchased companies established as early as 1985. International Assistance Mission , an NGO working in Afghanistan since 1966. RAF Institute of Aviation Medicine Miscellaneous Initial Address Message , a message used in ISDN User Part Intellectual Asset Management , an intellectual property magazine Internal auditory meatus , a canal in the temporal bone of the skull that carries nerves from inside the cranium towards the middle and inner ear compartments. IAM.BMEzine, a blog ging website for members of BMEzine . Integrated assessment modelling , ... more details
CSI may refer to Computing Common System Interface , former name of the Intel QuickPath Interconnect, a computer bus Complex specified information , a concept related to intelligent design Computer Security Institute Computer Society of India Computer Systems Integration principial Virtual Storage Access Method VSAM Key Sequenced Data Set KSDS data set for internal referencing in SMP E Control Sequence Introducer , a control character for initiating escape sequences Education Canadian Securities Institute , is a financial education company providing profesional credentials and compliance courses Cit Scolaire Internationale de Grenoble , an international school in Grenoble, France Cit Scolaire Internationale de Lyon , an international school in Lyon, France Colegio San Ignacio de Loyola , San Juan, Puerto Rico College of Southern Idaho , a community college in the United States College of Staten Island , part of The City University of New York in the United States Media and entertainment Consorzio Suonatori Indipendenti , an Italian musical group CSI franchise CSI Crime Scene Investigation , a.k.a. CSI Las Vegas , a television series CSI Miami , a spin off of the above show CSI NY , a spin off of the above shows CSI Trilogy , a three part television crossover among the above shows CSI comics CSI novels CSI video games Paranormal Civilian Saucer Intelligence , an unidentified flying object research group Committee for Skeptical Inquiry , an organization for paranormal investigation Religion Church of Scientology International Christian Schools International Church of South India Church of South India Boys Higher Secondary School Christian Surfers International Retail City Supermarket, Inc. , a grocery chain based in Pangasinan, Philippines Sport Commission Sportive Internationale , a governing body for motor racing Concours de Saut International , a ranking system for show jumping CueSports International , a pool pocket billiards event promotion company and league o ... more details
Unreferenced date November 2006 Notability date August 2009 Shared Variables are a feature of the APL programming language APL language which allowed mainframe APL programs to communicate with other facilities on a computer, which could include external files, DBMS, or other users. Shared Variables were first introduced by International Business Machines Corporation IBM in their APL.SV program product in 1973 and continue to be available today in IBM and Dyalog APL for Linux and Windows. The Shared Variable facility is roughly analogous to a Windows out of process server today. When APL 360 was first introduced in 1968, there were no built in means by which a user could directly access data from outside of the APL system. Some of the timesharing vendors began offering an external file system at the time, however IBM s approach was to supply a more generic facility whereby an external process could be used by an APL program. Following APL.SV, the IBM VS APL and APL2 program products also supported shared variables, as well as the IBM 5100 line of computers. Shared Variable Processors were available to allow APL access to the following Standard operating system files TSIO Time Sharing Option TSO and Conversational Monitor System CMS command processors AP100 VSAPL Stack Processor AP101 VSAPL Session Manager AP102 CMS Native Files AP110 CMS and TSO Native Files AP111 Virtual storage access method VSAM Files AP123 Full Screen Display Manager AP124 IBM Graphical Data Display Manager GDDM AP126 IBM DB2 AP127 In the early 1980s, I. P. Sharp Associates , which offered a rich and advanced APL, introduced Shared Variables in their product offering. Many of the Shared Variable Processors available for IBM products were also written for Sharp APL, notably TSIO called PJAM , AP124, AP126, and AP127. Further, as I. P. Sharp also offered IPSANET which allowed in house clients of SHARP APL to be connected to the network, a Network Shared Variable Processor, or NSVP, allowed programs ... more details
for the type of data set used by the IBM VSAM computer data storage system Key Sequenced Data Set Infobox Radio station name KSDS image Missing image removed image KSDS FM.png 175px city San Diego, California area branding Jazz 88.3 airdate 1951 in radio 1951 frequency 88.3 Megahertz MHz HD Radio format Jazz erp 22,000 watt s haat 75 meters class B1 facility id 58818 owner San Diego City College webcast http www.jazz88.org listen.php Listen Live website http www.jazz88.org callsign meaning KSDS 88.3 FM broadcasting FM , Jazz 88.3 is a full time mainstream traditional Jazz radio station , licensed to the San Diego Community College District , broadcasting 24 hours a day from the campus of San Diego City College . The station is owned by City College, although their antenna is located near their partner college, San Diego Mesa College Mesa College , located north of City College, in Kearny Mesa, San Diego, California Kearny Mesa . KSDS, founded in 1951, began programming Jazz in 1973 and in 1985 became San Diego s only full time jazz and blues station. KSDS is licensed by the FCC as a non commercial, non profit educational radio station and, for many years, operated with 3,000 watts at 88.3 MHz FM. In 2007, KSDS was granted a Construction Permit by the Federal Communications Commission allowing the station to increase its power to 22,000 watts, greatly improving the signal coverage area. They also feature a live stream and a playlist archive at their website. In 1992 KSDS Jazz88 was nominated Jazz Station of the Year by the radio industry trade publication The Gavin Report , and in 1993 was named Jazz Station of the Year by the National Association of Broadcasters , receiving the prestigious Marconi Award . Numerous nominations and awards have followed, including finalist nominations for Jazz Station of the Year in both 2004 and 2005. The programming on KSDS Jazz88 concentrates on blending the new and upcoming artists with the great performers of the past who have given ... more details
Resource Measurement Facility RMF is a performance monitor for the z OS Operating System. It also collects data for long term performance analysis and capacity planning. The product consists of the following components Monitor I Data Gatherer which collets data in adjustable intervals from one minute to one hour. The data is written to IBM System Management Facilities SMF data sets. RMF Monitor I uses the SMF data record types 70 to 78. In addition a dataspace can be created for the Monitor I data gather in which the most recent RMF SMF data records are buffered so that the RMF Postprocessor can access and process them immediately. Monitor III Data Gatherer collects data for short term and immediate data analysis. The data is collected in intervals ranging from 10 seconds to 10 minutes. The data is written to RMF Monitor III VSAM data sets and internally recorded in a wrap around buffer. The data gatherer also collets some special data for long term data analysis and records them in RMF SMF records too. Monitor II is the original snap shot monitor of RMF. This function also records information in RMF SMF record type 79 and provides interfaces for other reporting functions like SDSF . Over the years this function became less important and is today mostly used as a data provider for other reporting components. RMF Postprocessor is the reporting tool for RMF SMF records of type 70 to 78. It generates a big number of tabular and textuel reports for long term data analysis which provide a lot of detail of z OS and System z performance. RMF Spreadsheet Reporter is an extension of the RMF Postprocessor and displays selected data in spreadsheet applications on a workstation. RMF Monitor III Reporter is the display tool of RMF Monitor III data. The function is written in ISPF and runs under a TSO session on z OS. The reporter allows to move forward and backward in time and uses RMF Monitor III in storage buffer and data sets to access the collected data. RMF PM and the RMF W ... more details
Notability Products date April 2009 Advert date August 2010 Easytrieve Classic and Plus are programming languages tailored to generating reports and are primarily used by large corporations. Easytrieve is a product of CA, Inc. Computer Associates . Classic v. Plus Easytrieve or Easytrieve Classic is the first iteration in the Easytrieve series and requires the programmer to use a rigid program structure and syntax. The second iteration of Easytrieve was originally an independent product Pro Grammer that ultimately was renamed as Easytrieve Plus and no longer licensed separately, but instead made available to all Easytrieve customers. Easytrieve Plus includes changes to program structure and syntax, making it much more powerful and programmer friendly. Easytrieve can be run on mainframe z OS, z VM, z VSE , UNIX, Linux, and Windows systems. Program Basics In general, an Easytrieve program can accept multiple input files SAM ISAM VSAM , read databases TMF ADABAS DB2 IDMS , perform file manipulation read write sort , process data alphanumeric numeric packed binary , and invoke COBOL,Assembler programs. Easytrieve syntax is a combination of the COBOL and BASIC programming languages and is meant to be easy to use by non programmers. A typical Easytrieve program has three sections Environment Definition, Library, and Activity Definition. The Environment Definition section is used to specify operating parameters and modes for the program and is optional. The Library section is usually required in every program, and it is used to define data, such as any input and output files and working variables. Finally, the Activity Definition section is where the programming logic is defined. This section is where all file processing, data manipulation, sorting, and reporting is programmed. Of course, the Activity Definition section is required in every Easytrieve program. Similarity to COBOL The syntax of an Easytrieve program is very similar to COBOL. COBOL programmers will be right ... more details
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