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State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
Explain degree of relation? Degree of a Relation - The degree or arity of a relation is the number of attributes n of its relation schema.
why we fregment at all?
Explain the rules for creating a labelled precedence graph for testing view serializability. Ans: A schedule S is view serializable if it is view equivalent to a ser
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
List the requirements needed to design a trigger. The requirements are:- Specifying when a trigger is to be implemented. State the actions to be taken when the trigger im
A table joined with itself is called ? A table joined with itself is known as self join table. Normal 0 false false false EN-IN X-NONE X-NONE
Define in which normalisation form if an attribute of a composite key is dependent on an attribute of other composite key. Ans: 3NF A relation is in 3 NF if an attribute of
Type of views : Simple views and Difficult Views Feature Simple Views Complex Views Number of tables One
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