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Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
Differentiate between a unique key and a primary key. - By default, clustered index on column are created by primary key while nonclustered index are created by unique key.
Operator Precedence The basic operators used in SQL are * / - + Operators of the similar priority are evaluated From Left to right Parentheses are used to force priorit
In a relation, tuples are not inserted in any definite order. Ordering of tuples is not defined as a part of a relation definition. Though, records may be structured later accordin
The Locking Protocol: To manage concurrency related problems we use locking. A lock is mainly a variable that is associated with a data item in the database. A lock can be located
diagrams and meaning
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
What are the drawbacks of File Oriented System in details?
Explain the database Planning Project ?
A relation has: Relational Schema Relation instance Relational Schema: A relational schema shows the relation's name, its attributes and the domain of every a
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