Database Fundamentals Tutorial Answers132

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Understanding Database Concepts
* What is a database?
* A structured data collection organized to allow easy access, management, and updating.
* What are the different types of databases?
* Relational databases, NoSQL databases, hierarchical databases, network databases.
* What is a database management system (DBMS)?
* A software program that manages and controls access to a database.
Database Structure and Design
* What is a schema?
* A description of the structure of a database, including its tables, columns, and relationships.
* What is a table?
* A collection of related data organized in rows and columns.
* What is a column?
* A vertical section of a table that represents a specific attribute of the data stored in the table.
* What is a primary key?
* A column that uniquely identifies each row in a table.
Data Manipulation Language (DML)
* What is DML?
* A set of commands used to retrieve, insert, update, and delete data from a database.
* What is SELECT?
* Used to retrieve data from a database.
* What is INSERT?
* Used to add new rows to a table.
* What is UPDATE?
* Used to modify existing data in a table.
* What is DELETE?
* Used to remove rows from a table.
Data Definition Language (DDL)
* What is DDL?
* A set of commands used to create, modify, and drop tables and columns in a database.
* What is CREATE TABLE?
* Used to create a new table.
* What is ALTER TABLE?
* Used to modify an existing table.
* What is DROP TABLE?
* Used to delete a table.
Query Optimization
* What is query optimization?
* The process of improving the performance of database queries.
* What are indexes?
* Data structures that improve the efficiency of data retrieval.
* What is caching?
* Storing frequently accessed data in memory for faster retrieval.
* What is query planning?
* The process of determining the most efficient way to execute a query.
Database Security
* What is database security?
* The protection of databases from unauthorized access, use, disclosure, modification, or destruction.
* What are authentication and authorization?
* Mechanisms used to control access to a database.
* What is encryption?
* The process of converting data into a format that is difficult to decrypt.
* What is auditing?
* The process of tracking and reviewing database activity for security purposes.
Additional Resources
* [Database Fundamentals Tutorial for Beginners](/database-management-system/)
* [SQL Tutorial for Beginners](/sql/)
* [NoSQL Databases for Beginners](/specializations/nosql-databases)

2024-11-12

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