Interested to Buy Any Domain ? << Click Here >> for more details...
what are the different types of vsam files available? Explain them
- 1 Answers
- 1753 Views
- IBM, I also Faced
- E-Mail Answers
1. Entry sequential data set(ESDS) works like sequential file which contains only cluster and data components.
We must mention NONINDEXED while defining ESDS cluster.
It supports only sequential access in batch program.
2. Key sequential data set(KSDS) has three components(CLUSTER, DATA and INDEX).
We must code INDEXED while defining the KSDS cluster.
Data component consists of sorted records which are based on key values.
Index component consists of key values and the pointer to the data records.
3. Relative Record Data Set(RRDS) records are identified using Relative Record Number (RRN). Records are stored in numbered.
4. The linear dataset(LDS) is a byte-stream dataset which is commonly used in DB2 system. This dataset is rarely used in application programs.
Mainframe important concepts and programs are explained in the IIWOWIIS channel in youtube. Please support us and share your comments.
| Is This Answer Correct ? | 0 Yes | 0 No |
what is the probability of a complete system distortion under high end low performing multiprocessor job?
What is the main function of key sequenced data set in vsam?
What is a CA, control area?
what are the codes returned by the ams (access method services) command during the execution in vsam?
What is a lds (linear data set)?
what is the difference between vsam and dataset how do u create vsam dataset which file you r used?
what do you mean by a vsam slot?
What are the distinctive features of a ksda, key sequenced dataset?
Define gdg?
Explain the catalog?
Hi, I want to create alternate index on VSAM file.my file structure is ex: RoomID pic x(7) R000001 Floor pic a((6) First RoomNo pic x(2) FA1 Occupied(yes/no) pic a(3) Yes Occupied Batch pic x(10). Maths i want to create alternate index on floor,roomno fields.can i create alternate index on both the fields.and tell me how to create.
Create syntax for a VSAM file ?
COBOL 
