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What is a primary key?
Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
Define Database layer? The database layer defines the data formats used in the database.
SELECT Statement This statement is used for retrieving information from the databases. It can be coupled with many clauses. Let us talk about these clauses in more detail:
Differance between procedural and non procedural DML? Procedural and non procedural DML Procedural DML exactly what data is require and how to obtain those data. Non procedural
Enumerate or state the steps in creating a relevant database of a shop.
A database will be made to store information about patients in a hospital. On arrival, each patient’s personal details (name, address, and telephone number) are recorded where poss
What does conceptual design work? A conceptual design involves modelling independent of the DBMS.
What disadvantage of ODBC does OLE DB overcome? By breaking the features and the methods of a DBMS into COM objects, OLE DB characteristic overcomes a main disadvantage of ODBC
multiplicity constarin
Explain TPS concurreny executions stating their advantages in online business advancement
What is a Transaction? A transaction is an event which happens on the database. Generally a transaction reads a value from the database or writes a value to the database. If y
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