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State the Object Design for Processing
The object design phase comes after analysis and system design phase. The object design phase includes implementation details like as internal data structures and algorithms to implement operations, restructuring classes for efficiency, implementation of control, implementation of associations and packaging into the physical modules. Object design extends analysis.
what characterizes the levels in RAID technology
Views A view is like a window by which data from tables can be changed or viewed. The table on which a view is based is known as Base table. The view is stored as a SELECT stat
What are attributes? Give examples. An entity is shown by a set of attributes. Attributes are descriptive properties possessed by every member of an entity set. Example: pos
Discuss The difference between drop table R and delete from R. DROP TABLE command deletes all the records with the table definition. This command will automatically committed
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
Replication : It is definite as a copy of a relation. Every replica is stored at a dissimilar site. The alternative to replication is to store only single copy of a relation which
Log based recovery: Let us first describe the term transaction log in the context of DBMS. A transaction log is a record in DBMS that remains track of all the transactions of a dat
What is a guard condition? Explain it with a suitable example. The guard-condition is a Boolean expression written with respect to parameters of triggering event and attributes
Explain the Difference between DROP and DELETE DELETE deletes one or more than one tuples of a particular relation from the database. DROP is employed to remove a table from th
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