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Explain Candidate key?
Candidate Key - A candidate key is a minimal superkey, that can be used to uniquely identify a tuple in the relation.
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
A field-groups statement or an insert statement reverses storage space and transfers values. False.
Differentiate between Primary and secondary storage? Primary and secondary storage - Primary storage device stores the data temporarily. Primary storage is commonly used thro
how can apply joins on table
how map binary relation one to one
What is a records management consultation? Our organization is an authority for disseminating your specific requirements and giving you with a solution to effectively manage yo
We define a view in SQL through using the create view command. To describe a view, we must provide the view a name and must state the query in which computers the view. The form of
What is an ERD?
Consider the following relations: BRANCH( bno, street, area, city, pcode, Tel_no, Fax_no) STAFF( Sno, Fname, Lname, address, position , salary, bno) Express the subsequent qu
An example of a weak entity is Staff because the availabilityID cannot be uniquely identified unless it is used in conjunction with the foreign key known as availabilityID in the A
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