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What is the difference among a database schema and a database state?
The collection of information stored in database at particular moment in time is known as database state although the whole design of database is known as database schema.
What is NULL? Simply NULL means not in value.
Which database object does not physically exist? A view database object does not physically exist.
why three level architecture had been developed/
Security And Integrity After Reading the concepts of database recovery in the last section, let us now deal with a vital concept that helps in minimizing consistency errors in
What type of view of total database content? Data base content Conceptual view of total database contain.
Represent the following scenarios with E-R diagrams drawn using the ER Assistant software. The diagrams should indicate cardinality and optionality of relationships. Transform each
What is trigger Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
ADVANCE OBJECT DESIGN Introduction Analysis is the initial step of the OMT methodology. It is apprehensive with devising a precise, concise, correct and understandable mo
Which language has presently become the defacto standard for interfacing application programs along with relational database system? The language which has recently become the
Attributes having a one value for a particular entity. For instance, Age is a single valued attribute of a student entity. Attributes that have more than single values
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