Database Management System Question
Database Management System Question With Answer & Solution
Que. - The is the one in which the primary key of one relation is used as a normal attribute in another relation.
Que. - A integrity constraint requires that the values appearing in specified attributes of any tuple in the referencing relation also appear in specified attributes of at least one tuple in the referenced relation.
Que. - The operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple.
Que. - The result which operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match.
Que. - The operation performs a set union of two “similarly structured” tables
Que. - The most commonly used operation in relational algebra for projecting a set of tuple from a relation is
Que. - The operator takes the results of two queries and returns only rows that appear in both result sets.
Que. - A is a pictorial depiction of the schema of a database that shows the relations in the database, their attributes, and primary keys and foreign keys.
Que. - The provides a set of operations that take one or more relations as input and return a relation as an output.
Que. - Which one of the following provides the ability to query information from the database and to insert tuples into, delete tuples from, and modify tuples in the database?
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