IMB IMS DB ( Information Management System DataBase) Interview Questions

 
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?