Related Questions
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The drawback of shadow paging technique are
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A list consists of last names, first names, addresses and pin codes. If all people in the list have the same last name and same pin code a useful key would be
C. the compound key first name and last name
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4
DFD stands for
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Cascading rollback is avoided in all protocol except
A. strict two-phase locking protocol.
C. two-phase locking protocol
D. validation based protocol.
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4
Which of the following relational algebraic operations is not from set theory?
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Drop Table cannot be used to drop a table referenced by a ______ constraint.
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4
_____is a full form of SQL.
A. Standard query language
B. Sequential query language
C. Structured query language
D. Server side query language
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4
The transactions like adding an employee, enrolling a student in a course are examples of _______
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The normal form that is not necessarily dependency preserving is
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_____clause is an additional filter that is applied to the result.
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Which of the following concurrency control schemes is not based on the serializability property?
C. Time-stamp based locking
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………………… approach reduces time and effort required for design and lesser risk in database management.
A. Single global database
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For correct behaviour during recovery, undo and redo operation must be
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Maximum height of a B+ tree of order m with n key values is
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A transaction is in state after the final statement has been executed.
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E-R Modeling is achieved by using ____ diagrams
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Relational Algebra does not have
C. Aggregation operators.
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Whenever two independent one-to-many relationships are mixed in the same relation, a __________ arises.
B. Multi-valued dependency
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If an entity can belong to only one lower level entity then the constraint is
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Which of the following is not a consequence of non-normalized database?
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_____ is a utility to capture a continuous record of server activity and provide auditing capability.
C. SQL server service manager
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Which of the following is not a logical database structure?
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Which of the following is not comparison operator?
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The ____ operator joins two or more conditions and displays rows only if that rows data satisfies all conditions specified.
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Which of the following constitutes a basic set of operations for manipulating relational data?
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4
In 2NF
A. No functional dependencies (FDs) exist.
B. No multivalued dependencies (MVDs) exist.
D. No partial MVDs exist.
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4
Which of the following addressing modes permits relocation without any change over in the code?
C. PC relative addressing
D. Base register addressing
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In E-R Diagram total participation is represented by
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A ____ key specifies a uniqueness constraint that no two distinct tuples in any state r of relation R can have the same value for super key.
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An advantage of views is
C. Hiding of complex queries