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In an E-R diagram how attributes are represented ?In an E-R diagram attributes are represented in a ellipse.
Explain Dynamic Two-Phase Locking Here a transaction locks a data item instantly earlier than any operation is applied on the data item. After finishing all the operations on
Describe Graphical User Interface? Graphical User Interfaces (GUIs) - A GUI typically displays a schema to the user in diagrammatic form. The user can then specify a query th
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
Forward Recovery (Redo): In this system the committed changes made by a transaction are reapplied to a previous copy of the database. In simpler
What are the types of reference?explain it with suitable examples? Object oriented language given the ability to refer the object attribute of the type can be referred to the s
data models are being replaced over years. Reasons and why does that happen?
Explain the challenges before an E-business management.
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
Explain the Functional Mode with help of an example. Functional Model The functional model shows a computation and functional derivation of data values in it without ind
Give the Introduction of OBJECT DESIGN Strategies which are selected during system design are carried out in object-oriented design. In this procedure, objects which are identi
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