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State the meaning of Object Representation
The term object representation means "to represent object with the help of objects model symbols". Implementing objects is too simple. The object designer decides use of primitive types or to join groups of related objects in their representation. Other class can be defined in terms of a class. The classes should be implemented in terms of built-in primitive data types, like as integers, enumerated types and strings.
Creation of Indexes Automatically: When a primary key or Unique constraint is show in a table definition then a unique index is formed automatically. Manually: User can
Identify the need and use of data control through problem solving, illustration
1. Create a subroutine that does the remote blast on the file protein.fa. 2. Pass that returned files from the blast to another subroutine that parses the output and sends it to
explain external view
Implementing software control To implement software control designer must redesign strategy of state event model which is present in dynamic model. There are three basic ap
Boyce-Codd Normal Form (BCNF) The relation NEWSTUDENT (Enrolmentno, Sno, Sname, Cname, Cno,) has every attributes participating in candidate keys as all the attributes are assu
Explain the steps for reduction of E-R model into relational model. Ans:(a) Entity set in E-R model will be considered as table name in relational Model. (b) Attributes of e
By using the delete operation some consisting records can be deleted from a relation. To delete some definite records from the database a condition is also specified based on which
What is Thread splitting A thread of control is a path by which a set of state diagrams on that a single object is active at a time. Objects are shared between threads
What are the various states through which a transaction passes through in its lifetime? Briefly discuss all the events that causes transition from one state to another. Ans:
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