Trigger is a statement that is automatically executed by the system as a side effect of a modification to the database. Several existing systems have their own non standard trigger functions. For a trigger we need to specify the condition under which the trigger is executed.
define trigger?
Database trigger is a procedural code that occurs in response to an event of a table of a database. for ex if any row is added in employee table, new records should also be added in salaries table.
A database trigger is an action that the database management software will perform automatically when a preset list of conditions are met. Different database vendors have different mechanisms in place for the declaration of triggers, but the principles remain the same.
A trigger is a special kind of stored procedures that automatically executes when an event occurs in the database server. Insert, update and delete are called as events.
Acid cursor data database field primary & foreign keys procedure & function odbc & oledb normalization trigger
NA_ what are highlights of advanced DBMS what are highlights of advanced DBMS what are highlights of advanced DBMS
no, Java is not dbms.. Java is a programming language Dbms is database
dbms
Three types of DBMS (Database Management Systems) include relational DBMS, object-oriented DBMS, and NoSQL DBMS. Relational DBMS organizes data into tables with rows and columns, object-oriented DBMS stores data as objects and classes, and NoSQL DBMS handles unstructured and semi-structured data with flexible schemas.
In DBMS the data is stored in the form of table . Each row in DBMS is known as tuple.
importance of DBMS
gis and dbms
What is the purpose of dbms?DBMS is a software that organises the creation, storage and maintenance of Databases for end users.
DataBase Management System (DBMS)is a software package# it allows data to be effectively stored, retrieved and manipulatedand # the data stored in a DBMS packege can be accessed by multiple users and by multiple application programs like (SQL Server, Oracle, Ms-Access) .Types of DBMS# Hierarachical DBMS (HDBMS)# Network DBMS (NDBMS)# Relational DBMS (RDBMS)# Object Oriented DataBase(OODB)# Distributed DBMS (DDBMS)
Polyhedra DBMS was created in 1993.