In IMS DB not only DLI commands you an also issue SQL queries to access data from IMS DB database. Read more.
The use of Message format service (MFS) control blocks in IMS DC explained in this post.
Different kinds of NoSQL Databases in the age of Big data | Apply Big Analytics…
The most popular and mostly asked IMS DB or IMS DC status codes in interviews.
Twelve IMS DC transaction management in IM DB database interview questions.
TPPCB structure useful for IMS DB or DC programs.