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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 entity set in E-R diagram will be referred as fields or column name of table.
(c) Underline attributes of Attribute in E-R model will be considered as Primary key of the table.
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Backward Recovery (UNDO): In this system the uncommitted changes made by a transaction to a database are undone. Instead the system is reset to the last consistent state of databa
Explain how the object classes are mapped to tables. Each object class maps to one or more than one tables in the database. The objects in the class may be partitioned horizont
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Project Description: This is going to be a School portal to handle each activities in school such as, School fees payment, online registration and every other payment, course re
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