ddlc, Database Management System

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ddlc

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Define null value, Define NULL value NULL value NULL means something is...

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

State the step- implement software control designer, Implementing software ...

Implementing software control To implement software control designer must redesign strategy of state event model which is present in dynamic model. There are three basic ap

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Which element in the database can modified by changing the data dictionary? Data elements in the database can be changed or modified through changing the data dictionary.

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What are the three types of data sources used with ODBC? An ODBC file data source is a file that can be shared between database users. An ODBC system data source is one that is

Aggregation, What does Aggregation mean?

What does Aggregation mean?

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Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.

What is association, What is association? Give an example of association ...

What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa

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