In a multi-user database, if two users wish to update the same record at the same time, they are prevented from doing so by
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The one guideline to be followed while designing the database is
Data independence means
The set of all values that can be taken by the attribute is called as _______ of the attribute.
A ______ module is typically designed so that it will run on a user workstation or personal computer.
In an E-R diagram double lines indicate
The ______ key of a relation is the attribute (column) or collection of attributes, which uniquely identify…
Which of the following is a reason to model data?
The _____ category includes storage media that can be operated on directly by the computers central…
The graphical representation of a query is .
The data in the database at a particular moment of time is called the _______
The language that requires a user to specify the data to be retrieved without specifying exactly how…
Which of the following is not a consequence of concurrent operations?
____specifies a search condition for a group or an aggregate.
The full form of GUI is _________
Drop Table cannot be used to drop a table referenced by a ______ constraint.
Which of the following is not a characteristic of a relational database model?
Whenever two independent one-to-many relationships are mixed in the same relation, a __________ arises.
A list consists of last names, first names, addresses and pin codes. If all people in the list have…
A data type or format is specified for each _________
For using a specific database command is used.
approach reduces time and effort required for design and lesser risk in database management.
_____clause is an additional filter that is applied to the result.
Precedence graphs help to find a
The statement that is executed automatically by the system as a side effect of the modification of the…
An advantage of the database management approach is
When an E-R diagram is mapped to tables, the representation is redundant for
DBMS helps achieve
Which one is correct statement?Logical data independence provides following without changing application…
A weak entity has an ______ dependency on its owner entity, which can be used for both ON UPDATE and…
It is an abstraction through which relationships are treated as higher level entities
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