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What is object identity?
An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
What are the categories of SQL command? SQL commands are separated in to the following categories: 1. Data - Definitition Language 2. Data Manipulation language 3. Dat
a set of possible data value of an attribute is called??
Define physical and logical data independence. How does this architecture help in achieving these? Data independence entails that change in one view must not need a change in t
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
average response time?
example of bank
Define NULL value NULL value NULL means something is unknown. It does NOT mean null (the digit 0). Null is as well employed as attribute value for a particular entity in which
What are the various symbols used to draw an E-R diagram? Explain with the help of an example how weak entity sets are represented in an E-R diagram. Various symbols used to d
Emergence of Client Server Architecture Some of the pioneering work that was completed by some of the relational database vendors permitted the computing to be distributed on m
What are the causes of bucket overflow in a hash file organization? What can be done to reduce the occurrence of bucket overflow? When a record is inserted, the bucket to that
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