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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.
Define the Traditional System Analysis and Design Traditional System Analysis and Design (SAD) have three basic life cycle models. A typical software lifecycle consists of the
#what is cursor its uses ? Explain it
Use inheritance as an implementation technique when you are going to use inheritance as an implementation technique, you can achieve same goal in a safer way by making one cla
1. Use the Invoice table structure shown below to answer the following questions: a) Draw the dependency diagram and identify the primary key and all dependencies, including al
QUESTION (a) Give two advantages of using Linked List as compared to arrays. (b) (i) You are working as programmer at the Orange Mauritius branch. You have been asked to cre
it can be possible to create any table without primary key
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
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
write-set(T): Each data items that are written by a transaction T
Use of partial data by applications : In common, applications work with views rather than whole relations. Thus, it may be more appropriate to work with subsets of relations rather
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