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SQL WHERE NOT in SQL.

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SQL WHERE NOT Explanation Understanding the SQL WHERE NOT Clause The WHERE NOT clause in SQL is used to filter the results returned by a query based on conditions that do not match specified criteria. Essentially, it excludes records that match the condition. It is the logical opposite of the conditions that are typically specified with the WHERE clause. Examples Consider a database table named Employees with the following columns: Id - Employee's ID Name - Employee's Name Department - Department where the employee works Salary - Employee's Salary To select employees who do not work in the 'Sales' department, you would use the following SQL query: SELECT * FROM Employees WHERE NOT Department = 'Sales'; This query will return all employees whose Department is not 'Sales'. It effectively excludes all 'Sales' department employees ...
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Database Management System

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Database Management System Write a query with a function of DDL commands such as create, alter and drop. DDL or Data Definition Language actually consists of the SQL commands that can be used to define the database schema. It simply deals with descriptions of the database schema and is used to create and modify the structure of database objects in the database. DDL is a set of SQL commands used to create, modify, and delete database structures but not data. List of DDL commands: CREATE: This command is used to create the database or its objects (like table, index, function, views, store procedure, and triggers). QUERY: create table bca2 (stu_name varchar(6), stu_roll int, stu_marks number(7)); OUTPUT: DROP: This command is used to delete objects from the database. QUERY: drop table bca2; OUTPUT: ...
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ERP Management System Design

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ERP Management System Design Design and Develop Conceptual Data Model for an ERP Management System ER Diagram An Entity Relationship Diagram (ERD) displays the relationships of entity sets stored in a database. ER diagrams help explain the logical structure of databases, based on three basic concepts: Entities: Recognizable real-world things, either living or non-living, that are to be represented in the database. Attributes: Properties or details of an entity. Relationships: How entities interact with each other within the system. Enterprise Resource Planning (ERP) ERP is the integrated management of main business processes, often in real time, mediated by software. It is typically a suite of integrated applications that an organization uses to collect, store, manage, and interpret data from many business activities, and can be either local or cloud...
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