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Domain Relational Calculus
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In domain relational calculus, all values that appear in tuples of expression are values from
Views
Domain
Aggregation
Relation
Solution to improving reliability is to introduce
transitivity
reflectivity
Redundancy
Repositioning
In data file, first record of any of block is called
anchor record
non dense record
None of above
dense record
Memory which loses contents because of power cut is classified as
volatile memory
tertiary memory
Random Access Memory
non volatile memory
Algebraic operation that outputs specified attributes from all rows of input relation, is said to be
Union operation
Natural join
Selection
Projection
In relational calculus, variables are bounded with help of
Identifiers
non-quantifiers
non-identifiers
quantifiers
In relational calculus, variables are bounded with help of
non-quantifiers
Identifiers
quantifiers
non-identifiers
Weak entities and their identifying relationship in ER diagrams are represented by
diamond shape with double line
oval shape with double line
square shape with double line
rectangle shape with double line
A connection is opened using method
getConnection
inConnection
onConnection
openConnection
Interface ResultSet has a method, getMetaData(), that returns a/an
value
RESULT
Tuple
object
Interface ResultSet has a method, getMetaData(), that returns a/an
object
value
Tuple
RESULT
Definition of a schema object is protected through
Data declaration lock
Data dictionary lock
Data administrator lock
Data definition lock
Database system figures out an efficient means of accessing data, in
Procedural DML
Domain DML
Subjective DML
Declarative DML
A second form of relational calculus, is known as
Relational calculus
Domain relational calculus
Tuple relational calculus
Attribute relational calculus
A method that uses two independent pieces/processes of information to identify a user is known as
Authentication through encryption
Two-factor authentication
Two-method authentication
Password-method authentication
In SQL environment, collection of schemas is classified as
Catalog
initiator
Integration
value set
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Domain Relational Calculus
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