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DBMS for Competitive Exams MCQs PDF: Questions Answers Download
While an DDL operation acts on or refers to the object, it is protected by
- Encapsulation
- Encryption
- Locking
- Views log
Restricting data access and database activities is the responsibility of
- Data concurrency control
- Data access control
- Data atomicity control
- Data integrity control
Oracle Database acquires a DDL lock on behalf of?
- Explicit action
- Transaction
- Query
- Retrieval
The definition of a schema object is protected through
- Data dictionary lock
- Data declaration lock
- Data definition lock
- Data administrator lock
The data dictionary cache holds data in the form of
- Blocks
- Buffers
- Rows
- Columns
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Computer Architecture MCQ Questions
- Operation for performing on source operands, S1 and S2 is given by well-known field,
- A 2nd key feature of server systems is
- Regs[R4] = Regs[R4]+ Regs[R3]; given statement represents
- Final stage of completion of an instruction, after which merely result remains, is known
- For reducing chance of throwing information which soon will be needed, this technique used is
DBMS for Competitive Exams MCQs Book Questions
- Data of n-dimensions can be visualized as an n-dimensional cube, called
- Variable in any expression of query is called a
- Operations that add expressive power to relational algebra, is known to be
- For substitution of all, SQL uses decode function, which conceptually is
- Occurrence of deadlock is an example of