DBMS
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GRANT and REVOKE Commands
In SQL, GRANT and REVOKE are two commands used to manage user permissions and access control for database objects. These…
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Creating Views in SQL
In SQL, views are virtual tables that are created based on a SELECT query. They are not stored as physical…
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CURSORS IN SQL
A cursor in SQL is a temporary work area created in system memory when a SQL statement is executed. A…
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Embedded SQL
Programs written in high level languages such as C/C++ can use EMBEDDED SQL to access and update data stored in…
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what is a sequence
In database management systems, a sequence is an object that generates a sequence of unique numbers or values on demand.…
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SUB QUERIES /NESTED QUERIES
Subqueries, also known as nested queries, are SQL statements within other SQL statements. These queries are used to retrieve data…
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JOINS in SQL
Structured Query Language (SQL) is a widely used programming language that is used to manage and manipulate data in relational…
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DBMS Languages
DBMS Languages Database management system (DBMS) is a software system that enables users to define, create, maintain, and control access…
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FUNCTIONS IN SQL
Functions in SQL are predefined procedures that take input values, perform an operation, and return a single value or a…
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Update, Delete, DROP commands in SQL
Update, Delete, DROP commands in SQL Update UPDATE is the SQL verb that changes or modifies data values in a…
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Aggregate Functions in SQL
Aggregate functions in SQL are used to perform calculations on a set of values and return a single value. These…
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Queries in SQL (Select, FROM, WHERE, GROUP BY, ORDER BY, HAVING)
Queries are a group of commands used to extract data from tables in a database using some SQL constructs. Queries…
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Insert Operation in SQL
Insert Operation After creating the tables, we have to insert data in it so that it can be called database. …
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Alter table command in SQL
Alter table command Learn to create table We can change the definition of a table even after creating it. For…
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Integrity Constraints in SQL
Integrity Constraints While creating a table you can place certain Constraints/limitations on the values stored in the table. Different constrains…
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