Computer Science - Database Systems - Discussion

27. 

Which two files are used during operation of the DBMS?

[A]. query language and utilities
[B]. data manipulation language and query language
[C]. data dictionary and transaction log
[D]. data dictionary and query language
[E]. None of the above

Answer: Option C

Explanation:

No answer description available for this question.

Nishant said: (Jan 16, 2014)  
What is transaction log?

And why dml is not required?

Seetha said: (Feb 5, 2016)  
DML is a part of query language so a separate option does not make any sense. Query language is important in order to use the database.

In the field of databases in computer science, a transaction log (also transaction journal, database log, binary log or audit trail) is a history of actions executed by a database management system to guarantee ACID properties over crashes or hardware failures.

Azad said: (Feb 11, 2017)  
The Question asked is about files, not services.

That is why (c) is the correct option.

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