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Questions and Answers
Which programming language is commonly used by most relational database management systems (RDBMS) to manage data stored in tabular form?
Which programming language is commonly used by most relational database management systems (RDBMS) to manage data stored in tabular form?
What is a relational database composed of?
What is a relational database composed of?
How many relational tables were created in the sales database mentioned in the text?
How many relational tables were created in the sales database mentioned in the text?
What is the purpose of running queries in a relational database?
What is the purpose of running queries in a relational database?
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How are the relations between tables formed in a relational database?
How are the relations between tables formed in a relational database?
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Study Notes
Programming Language for RDBMS
- Structured Query Language (SQL) is the primary programming language used to manage and manipulate data within relational database management systems.
Composition of a Relational Database
- A relational database is composed of tables, which organize data in rows and columns, similar to a spreadsheet format.
- Each table represents a specific entity, with columns that define properties of the entity and rows that contain the actual data entries.
Relational Tables in Sales Database
- In the sales database example, a total of four relational tables were created to store various aspects of sales data, such as customers, products, orders, and transactions.
Purpose of Running Queries
- Queries are used to retrieve, manipulate, and analyze data stored within a relational database. They enable users to filter, sort, and aggregate data as needed for reporting and decision-making.
Relations Between Tables
- Relationships between tables in a relational database are established through primary and foreign keys.
- A primary key uniquely identifies a row within a table, while a foreign key in another table points to the primary key, establishing a link or relationship between those tables.
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Description
Test your knowledge of SQL and relational databases with this practical quiz. Learn how to create and query a database using SQL, the programming language commonly used by RDBMS.
