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Define an abstraction by which relationships are treated as higher level entities
Ans: Aggregation.
It is an abstraction by which relationships are treated as higher level entities Aggregation. (In ER diagram, aggregation is utilized to denote a relationship as an entity set.)
What is recovery management component? Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
Explain the cartesian product in Database Management System
Due date for May 8
Project Description: We have an encrypted HSQL Database which we want to change into csv format. HSQL DB . We have java application (jar file) which reads that database but n
What are the two types of indices? The two types of indices are:- A) Dense index B) Sparse index
What is transaction? Collections of operations that form a single logical unit of work are known as transactions.
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
Define Join and Outer Join and differentiate between them. Ans: Join - It generates all the combinations of tuples from two relations which satisfy a join condition. Oute
A Relation Schema represented by R(A1, A2, ..., An) is made up of the relation name the list of attributes and R Ai that it contains. A relation is described as a set of tuples
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