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markanthos
New User
Joined: 28 Apr 2005
Posts: 14
Location: India
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What is a flat file and what are the uses of Flat files?
How many types of flat files are there? |
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priya
Moderator
Joined: 24 Jul 2003
Posts: 568
Location: Bangalore
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Flat Files - NON-VSAM Files.
Types:
QSAM
BSAM
BDAM
ISAM
BPAM |
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markanthos
New User
Joined: 28 Apr 2005
Posts: 14
Location: India
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What are the full forms of the above mentioned files.
Please elaborate on their usage |
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priyesh.agrawal
Senior Member
Joined: 28 Mar 2005
Posts: 1448
Location: Chicago, IL
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QSAM : Queued Sequential Access Method : A file access method for reading, writing and updating sequential data sets and partitioned data set members.
BSAM : Basic Sequential Access Method
BDAM : Basic Direct Access Method
ISAM : Indexed Sequential Access Method : A method for managing how a computer accesses records and files stored on a hard disk. While storing data sequentially, ISAM provides direct access to specific records through an index. This combination results in quick data access regardless of whether records are being accessed sequentially or randomly.
BPAM : Basic Partitioned Access Method : An access method for reading members of partitioned data sets.
Regards,
Priyesh. |
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