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Define an operator that a Relational Algebra does not have
Ans: Relational Algebra does not have Aggregation operators.
FDs in Entities : Student entity : Enrolment number → Student name, Address Course Entity :
What is the use of keyword ISA? The use of keyword ISA is to show that a class is a specialization of another class.
What are the disadvantages of relational approach? Disadvantages of relational approach: • Substantial hardware and system software overhead • May not fit all business models •
The Database administrator (DBA) uses the data dictionary in each phase of a database life cycle, beginning from the data gathering phase to the design, execution and maintenance p
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
sir, could anybody help me in getting complete information about the mentioned topic
Have a look around the site, and at some of the sites they have featured. These are all examples of bad design, and also offer an explanation about why they fall into this category
One-to-one relationship: For every 1:1 relationship type R in the ER diagram including two entities E1 and E2 we take one of entities (say E1) preferably with total participatio
Write a short note on built in function in QBE? Built in function in QBE: QBE involves various built in functions like AVG, MAX,MIN,SUM and CNT. We must prefix these operator
Project Description: I want to build a card playing Website. The user should be able to 1. Login. 2. Have profile access. 3. Put money into the site. 4. Selects t
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