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Normalization:It is a process of examine the given relation schemas based on their primary key and Functional Dependencies (FDs) to achieve the properties
Database normalization is the process of arranging the tables and fields of a relational database to minimize dependency and redundancy. Normalization generally adds dividing large tables into smaller tables and describing relationships between them.
Difference between Operating System and Database Security Security within the operating system can be executed at various levels ranging from passwords for access to system, t
What are the different kinds of database end users? Discuss the major activities of each? End-Users - End-users are the people whose jobs need access to the database for que
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
Explain the Attribute inheritance Ans: Throughout the rendering of the objects in a view, attribute sets of objects higher in the view hierarchy are inherited via objects below
Due date for May 8
Describe integrity and security? a) Domain constraint b) Referential integrity A value that appears in one relation for a given set of attributes also appear fo
Which data manipulation command combines the records from one or more tables ? JOIN data manipulation command combines the records from one or more tables.
What is Message switching Message switching transmits data units which can be arbitrarily long. Packet switching has a utmost packet size, if any message longer than that, it s
Candidate Key: In a relation R, a candidate key for R is a subset of the set of attributes of R, which have the differnt two properties: (1) Uniqueness: N
explain in detail about crash recovery
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