DFD stands for
Data Flow Document
Data File Diagram
Data Flow Diagram
Non of the above
Correct Answer :
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According to the levels of abstraction, the schema at the intermediate level is called
A list consists of last names, first names, addresses and pin codes. If all people in the list have…
An advantage of the database management approach is
Shadow paging has
DFD stands for
DROP is a statement in SQL.
Grant and revoke are _____ statements.
As per equivalence rules for query transformation, selection operation distributes over
The collection of information stored in a database at a particular moment is called as ......
operator is used to compare a value to a list of literals values that have been specified.
The language that requires a user to specify the data to be retrieved without specifying exactly how…
Data items grouped together for storage purposes are called a
What is a disjoint less constraint?
The common column is eliminated in
The middleware databases in which the business rules act are applicable to _______ tier architectures
The fact that all employees of a particular organization should not have salaries more than $10000 is…
Dependency preservation is not guaranteed in
In multiple granularity of locks SIX lock is compatible with
Between DRAM and magnetic disk storage another form of memory, called ______ memory is becoming common…
In SQL the word natural can be used with
The one guideline to be followed while designing the database is
______is a preferred method for enforcing data integrity
____ table store information about database or about the system.
The clause in SQL that specifies that the query result should be sorted in ascending or descending order…
Which of the following is not a logical database structure?
The set of all values that can be taken by the attribute is called as _______ of the attribute.
Processed data is called _____
DBMS is a collection of _____ that enables user to create and maintain a database.
Which of the syntax is correct for insert statement? i) insert into values ii) insert into (column list)…
In a multi-user database, if two users wish to update the same record at the same time, they are prevented…
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