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What are the different integrity constraints in RDBMS?
The various integrity constraints in RDBMS are as:
Primary Key: primary key is a grouping of one or more attributes whose unique value locates each row in the table.
Referential integrity (A foreign key): A foreign key is attributing of one table which references to attribute in another table.
List any two disadvantages of a database system ? The disadvantages of database system are: • Database systems are difficult, complex, and time-consuming to design. • Substanti
want a idea for final year project
Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
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The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
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Single Valued Normalisation Codd in the year 1972 formed three normal forms (1NF, 2NF, and 3NF). These were based on functional dependencies between the attributes of a relati
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