A _____ is used to define overall design of the database
code
data definition language
application program
schema
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- What will be the number of columns and rows respectively obtained for the operation, A- B, if A B are…
- Which of the following is not comparison operator?
- A ____ key specifies a uniqueness constraint that no two distinct tuples in any state r of relation…
- Which of the following constitutes a basic set of operations for manipulating relational data?
- If an entity can belong to only one lower level entity then the constraint is
- Data independence means
- The fact that information in the data warehouse changes far less often and may be regarded as non-real-time…
- It is an abstraction through which relationships are treated as higher level entities
- ______contains information that defines valid values that are stored in a column or data type.
- Union operator is a :
- Relations produced from an E-R model will always be
- _____ is a utility to capture a continuous record of server activity and provide auditing capability.
- An advantage of the database management approach is
- The division operator divides a dividend A of degree m+n by a divisor relation B of degree n and produces…
- The drawback of shadow paging technique are
- A top-to-bottom relationship among the items in a database is established by a
- Tree structures are used to store data in
- Which of the following is a reason to model data?
- Drop Table cannot be used to drop a table referenced by a ______ constraint.
- Maximum height of a B+ tree of order m with n key values is
- The clause alter table in SQL can be used to
- The concept of mapping of ______ entity types is the concept in which the for each strong entity type…
- The collection of information stored in a database at a particular moment is called as ......
- ______defines the structure of a relation which consists of a fixed set of attribute-domain pairs.
- Relationships among relationships can be represented in an-E-R model using
- Relational Algebra is
- A transaction is in state after the final statement has been executed.
- Immediate database modification technique uses
- A DBMS is a ____ user if at most one user can use the system and is mostly restricted to personal computer…
- E-R Modeling is achieved by using ____ diagrams