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Differentiate OO development from structured development.
Structured approach of problem solving is based upon the idea of decomposition of system into subsystem. In this approach of system development, readjustment of some new changes in system is very hard. While as in object oriented approach holistic view of application domain is considered and the related objects are identified. Further categorization of objects is done. Object oriented approach provide space for further enhancement of system without too much increase in the systems complexity.
a. Define the term "deadlock". There are four conditions that must hold before deadlock is possible. Name them. b. Outline an algorithm that detects whether there is a deadlock.
Problem 1. Write the SQL queries using Data Manipulation Language (DML) statements. Insert values into student table with field names using insert command Display the
Describe in brief about DBMS ?
The Maximum no of key fields that can be used in a header is?? 50
Describe how you can simplify Operations. To simplify operation, one should use inheritance, where possible to use, to reduce the quantity of distinct operations. Introduce new
Why 'AS' clause is used in SQL ? 'As' clause is used for Rename operation. ‘AS' clause is used in SQL for rename operation. (e.g., SELECT ENO AS EMPLOYEE_NO FROM EMP)
What is a data dictionary? Data Dictionary is a main source of data in a data management system. Its major function is to carry the creation and management of data definition
Serialisable Schedules: If the processes of two transactions conflict with each other, how to verify that no concurrency related problems have happened? For this, serialisability t
What is nested relational model? The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.
How is concurrency identified? Concurrency in objects can be identified by the way they alter their state. Current objects can change their state independently. Aggregation imp
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