Technology problems
- 1. Assuming that the DEFINE JCL is not available, how do you get info about a VSAM files organisation? Discuss
Correct Answer: Use the LISTCAT command
- 2. What is a VSAM slot? Discuss
Correct Answer: A relative record dataset (RRDS) consists of a specified number of areas called slots Each slot is identified by a relative record number (RRN) which indicates its relative position in the file
- 3. How do you fix the problem associated with VSAM out of space condition? Discuss
Correct Answer: Define new VSAM dataset allocated with more space Use IDCAMS to REPRO the old VSAM file to new VSAM dataset Use IDCAMS to ALTER / RENAME the old VSAM dataset to DELETE the old VSAM datset Use IDCAMS to ALTER / RENAME the new VSAM dataset to the name of the original VSAM dataset
- 4. What are the three levels of definition for the VSAM DEFINE? Discuss
Correct Answer: They are DEFINE CLUSTER, DATA and INDEX
- 5. What are the different types of VSAM files available? Discuss
Correct Answer: ESDS: Entry Sequence Data Set KSDS: Key Sequence Data Set RRDS: Relative Data Set
- 6. How can we distinguish between an online and batch program in IMS environment? Discuss
Correct Answer: If in application program IO-PCB is there then it is a online program In ENTRY statement IO-PCB must be listed first and then DB-PCB
- 7. What are the two types of fields available in IMS DB? Discuss
Correct Answer: Key Fields - (PROCOPT=K) - Used to sequence the database and can't be changed - It is the field within a segment, used to identify the occurrence of the segment - Used to maintain the IMS segments in ascending sequence Search Fields - (PROCOPT=G) - Used to search for a segment, without the segment being sequenced on that field - A segment need not have a key or search field Both types of fields can be used to search the database
- 8. What are the processing modes available in IMS DB? Discuss
Correct Answer: Batch DL/I MPP Mode - (Message Processing Program) BMP Mode - (Batch Message Processing)
- 9. What are the difference between in-stream procedure and inline procedure in JCL ? Discuss
Correct Answer: An in-stream PROC is defined right in the jcl stream and doesn't reside in the proclib This is an older technique associated with punched cards but it is still in use with setup and installation programs from vendors for the in-line perform instead of: perform add-paragraph until switch = 'y' you can code perform until switch = 'y' body of code end-perform body of code is the code from add-paragraph appearing in-line (ie right in the perform) instead of in a separate paragraph (out of line code)
- 10. In an AVL tree the balancing is to be done when the pivotal value is in range of
Options- A. greater than 1 and less than -1
- B. greater than -1 and less than 1
- C. greater than 1
- D. less than -1 Discuss
Correct Answer: greater than 1 and less than -1
Explanation:
Difference between the heights of left and Right subtrees in an AVL tree can never be greater than +1
More in Interview:
Programming
Copyright ©CuriousTab. All rights reserved.