IMS DB Interview Questions And Answers
IBM Information Management System (IMS) is a joint hierarchical database and information management system with extensive transaction processing capabilities.
1 ► What is an IMS Database?
2 ► What is DBMS in IMS?
3 ► What are the objectives of DBMS in IMS?
4 ► What is IMS (DB/DC)?
5 ► What do you mean by Hierarchical Database?
6 ► What are the advantages and disadvantages of a Hierarchical Database?
7 ► What is DL/I?
8 ► Explain IMS Software Environment?
9 ► What are the main control blocks available in IMS DB?
10 ► What is DBD?
11 ► What is PSB?
12 ► What is ACB?
13 ► What is PCB?
14 ► What information does a DBD contain?
15 ► Explain DBDGEN process?
16 ► Which languages does IMS support / application program languages?
17 ► What is a segment in IMS?
18 ► What are the two types of fields available in IMS DB?
19 ► What information does a PSB contain?
20 ► Explain PSBGEN process?
21 ► Explain ACBGEN process?
22 ► What is the advantage of dynamic generation of ACB?
23 ► What is the disadvantage of dynamic generation of ACB?
24 ► What is the advantage of creating the ACBs well ahead of time?
25 ► What are the processing modes available in IMS DB?
26 ► What is meant by Batch DL/I mode?
27 ► What is meant by MPP mode?
28 ► What is meant by BMP mode?
29 ► Can we use PROCOPT on PCB and Segment field (SENSEG)?
30 ► What are the retrieval sequences in IMS DB?
31 ► What is the maximum number of levels allowed in IMS DB?
32 ► What is the maximum number of segment types allowed for a single database?
33 ► What is the maximum number of fields allowed per segment and what is the maximum number of fields per database?
34 ► How many root segments do we have per database record?
35 ► What are the two ways in which DL/I interface can be invoked?
36 ► What is the maximum number of PCBs allowed in a PSB?
37 ► What is the maximum of key fields and search fields allowed in a segment?
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