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What are the two approaches to store relations in distributed database?
a) Replication
b) Fragmentation
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 the main difference between read-only and update methods? A read-only method does not affect the values of a variable in an object, whereas an update method may alter t
Describe the primary key functions? Primary Key : The primary key is an attribute or a set of attributes in which uniquely identify a specific example of an entity. Every entit
Identify the need and use of data control through problem solving, illustration
Sub query in the UPDATE command : Example : //Double the commission for employees, who have got at least 2 increments. UPDATE EMP SET COMM = COMM * 2 WHERE
You are required to implement integrity constraints within the database to enforce the following requirements: For Projects: Start date must be supplied. Start date cannot be i
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
complete assignment on the above title.
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Database systems have many opposite efforts ?
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