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Explain the term - Adjustment of inheritance
The inheritance can be enlarged as object design progresses by changing class structure. The designer should do:
i) Adjust or rearrange classes and operations
ii) Abstract common behavior out of groups of the classes
iii) Use delegation to share the behaviour when inheritance is semantically wrong.
what is attribute is attribute inheritance in dbms?
What is Structured Query Langauge (SQL)? SQL is a powerful set-oriented language which was formed by IBM research for the databases that adhere to the relational model. It havi
joins
To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
What is the meaning of Data Independence ?
Step 1 . Using Oracle, create the tables identified in the preferred solution for Assignment 2. Technicians (ZipCode, TechnicianID, FirstName, LastName, Street, City, State, Home
Why, generally does an object-oriented system use the relational DBMS? The reasons for using relational DBMS for OO systems could be any combination of following: a. Many or
Explain sorted File with advantages? Sorted file The sort utility shall perform one of the subsequent functions: 1.Sort lines of all the named files together and write the
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
Define the terms i) Key attribute ii) Value set Key attribute: An entity type usually has an attribute whose values are exact from each individual entity in the collection. Su
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