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DFD stands for
A relational database developer refers to a record as
When an E-R diagram is mapped to tables, the representation is redundant for
The normalization was first proposed by .
Employees in a company are each assigned their own office, i.e. for each employee there exists a unique…
Which of the following addressing modes permits relocation without any change over in the code?
The data models defined by ANSI/SPARC architecture are
Between DRAM and magnetic disk storage another form of memory, called ______ memory is becoming common…
____ table store information about database or about the system.
Which of the following is not a property of transactions?
The part of a database management system which ensures that the data remains in a consistent state is
Relational Algebra does not have
Processed data is called _____
In an ER diagram the ___shape specifies the Attibute and a ____ shape specifies the primary key attribute.
In an E-R, Y is the dominant entity and X is a subordinate entity. Then which of the following is incorrect…
An advantage of views is
If a transaction T has obtained an exclusive lock on item Q, then T can
The relational model is based on the concept that data is organized and stored in two-dimensional tables…
The one guideline to be followed while designing the database is
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…
An outstanding functionality of SQL is its support for automatic_____ to the target data.
In SQL the word natural can be used with
According to the levels of abstraction, the schema at the intermediate level is called
The set of all values that can be taken by the attribute is called as _______ of the attribute.
In b-tree the number of keys in each node is than the number of its children.
A weak entity has an ______ dependency on its owner entity, which can be used for both ON UPDATE and…
The fact that all employees of a particular organization should not have salaries more than $10000 is…
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