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How can Redundant Associations be done
It can be done by asking questions:
i) Is there a specific arrangement of network which would optimize critical aspects of completed system?
ii) Will adding new associations which were useful during analysis restructure network? All this sometimes might not produce the most efficient network, one which can handle complex access patterns as well as related frequencies of various kind of access.
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
we need example of 2phase locking
Is it mandatory to declare all the tables in Report by the key word tables for all the tables that exist in the structure of LDB, and are being explained in the Database part of LD
Group By clauses • It is used to group database tuples on the basis of definite common attribute value like as employees of a department. WHERE clause still can be used
What is primary Key Explain? Primary Key - Primary key is one of the candidate keys. It should be selected such in which its attribute values are never, or very rarely, chang
Project Description: I would like to get a database of a website which has clients email name and phone number. If you are able to get information from a website, by entering
Create Student DB and execute Insert query? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, course
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
Domain Constraints Domain constraints are primarily formed for defining the logically correct values for an attribute of a relation. The relation allows attributes of a relatio
Every School has many teachers and many students. Each student is assigned to one school and each teacher works for one school only. Each teacher teaches more than one subject but
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