Maximum height of a B+ tree of order m with n key values is
None of these
Correct Answer :
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Key to represent relationship between tables is called
An advantage of views is
The concept of mapping of ______ entity types is the concept in which the for each strong entity type…
Relational Algebra does not have
The full form of GUI is _________
In an E-R, Y is the dominant entity and X is a subordinate entity. Then which of the following is incorrect…
_____ command can be used to modify a column in a table
The statement that is executed automatically by the system as a side effect of the modification of the…
According to the levels of abstraction, the schema at the intermediate level is called
_______ product was acquired by Informix, integrated into its RDBMS and introduced as the Informix Universal…
A transaction is in state after the final statement has been executed.
The data models defined by ANSI/SPARC architecture are
The fact that information in the data warehouse changes far less often and may be regarded as non-real-time…
The set of all values that can be taken by the attribute is called as _______ of the attribute.
____ table store information about database or about the system.
Which of the following is not a consequence of non-normalized database?
______is a preferred method for enforcing data integrity
Employees in a company are each assigned their own office, i.e. for each employee there exists a unique…
Which of the syntax is correct for insert statement? i) insert into values ii) insert into (column list)…
Consider the join of relation R with a relation S. If R has m tuples and S has n tuples, then the maximum…
Between DRAM and magnetic disk storage another form of memory, called ______ memory is becoming common…
Immediate database modification technique uses
Shadow paging has
The transactions like adding an employee, enrolling a student in a course are examples of _______
Relations produced from an E-R model will always be
DBMS is a collection of _____ that enables user to create and maintain a database.
If the closure of an attribute set is the entire relation then the attribute set is a
Which of the following is not a consequence of concurrent operations?
Which of the following constitutes a basic set of operations for manipulating relational data?
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