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Questions and Answers
What is the primary function of SQL?
What is the primary function of SQL?
- To manage and manipulate relational databases (correct)
- To create graphic user interfaces
- To enhance operating system performance
- To act as a programming language for web development
Which command type is used to define database schemas in SQL?
Which command type is used to define database schemas in SQL?
- Data Definition Language (DDL) (correct)
- Data Control Language (DCL)
- Data Manipulation Language (DML)
- Transaction Control Language (TCL)
Which of the following operations is NOT part of Data Manipulation Language (DML)?
Which of the following operations is NOT part of Data Manipulation Language (DML)?
- Selecting data from a database
- Creating a new database (correct)
- Inserting data into a table
- Updating existing records
Which statement accurately characterizes a feature of SQL?
Which statement accurately characterizes a feature of SQL?
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What is the main purpose of Data Control Language (DCL) in SQL?
What is the main purpose of Data Control Language (DCL) in SQL?
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When was SQL originally developed and by whom?
When was SQL originally developed and by whom?
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What is one of the key reasons SQL is considered essential in various database management systems?
What is one of the key reasons SQL is considered essential in various database management systems?
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Which operation can be performed using SQL?
Which operation can be performed using SQL?
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Study Notes
Overview of SQL
- SQL (Structured Query Language) is essential for managing and manipulating relational databases.
- It was originally developed in the early 1970s at IBM.
Key Features of SQL
- SQL enables users to perform operations like querying, updating, inserting, and deleting data in databases.
- It provides a comprehensive platform for data analysis and reporting.
- Management of relational databases is facilitated by the ability of SQL to create and alter database schemas.
SQL Command Categories
- Data Manipulation Language (DML): Involves commands for querying and manipulating data.
- Data Control Language (DCL): Responsible for controlling access to data, including granting and revoking permissions.
- The type of SQL command used to define schemas is known as Data Definition Language (DDL).
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- This approach enhances studying efficiency through technology integration, allowing access anytime and anywhere.
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