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Describe the Association: Design
Before we describe association design let us define association "Association is set of links between two objects in the object model". It is helpful in finding paths among objects. It is a conceptual entity, which could be used for modeling and analysis. At final phase of advance object design, we must use strategy for applying association in object model. Association is also termed as "a collection of links between two objects having common structure and common semantic".
Serialisability: Any schedule that makes the similar results as a serial schedule is known as a serialisable schedule. But how can a schedule are determined to be serialisable or n
Create table employee and enter employee data in SQL? Consider the following relational schemas: EMPLOYEE (EMPLOYEE_NAME, STREET, CITY) WORKS (EMPLOYEE_NAME, COMPANYNAME, SAL
How to create a biological database based on viruses. How to decide which attribute should be there in the table and schema? How to identify the primary keys, foreign keys, domain,
Project Description: We have purchased facebook style chat software which we are using with our site. It is prepared in PHP but the rest of the site is developed asp.net. Iss
WHAT IS MEANT BY E-R MODEL
What is trigger Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
Differentiate sub-class and super-class? The specialization of a class is known as subclasses.eg: employee is a subclass of person and teller is a subclass of employee. Convers
normal forms
What are deadlocks? How can they be avoided? Ans: Deadlock considers to a particular condition when two or more processes are every waiting for another to release a resource,
Explain the cartesian product in Database Management System
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