What are the concepts in SQL?

Below are some SQL concepts that you should know,

• SQL is Relational Database. There are various database systems such as Relational, Hierarchical, Document, etc.
• Keys in SQL.
• Views in SQL.
• SQL Joins.
• Normalization of Database.
• Transactions in SQL.
• Subqueries in SQL.
• Cloning Tables in SQL.

What are relational database concepts?

A relational database is a type of database that stores and provides access to data points that are related to one another. The columns of the table hold attributes of the data, and each record usually has a value for each attribute, making it easy to establish the relationships among data points.

What are the principles of database design?

Certain principles guide the database design process. The first principle is that duplicate information (also called redundant data) is bad, because it wastes space and increases the likelihood of errors and inconsistencies. The second principle is that the correctness and completeness of information is important.

What are the fundamentals of a database?

Fundamentals of Database Systems combines clear explanations of theory and design, broad coverage of models and real systems, and excellent examples with up-to-date introductions to modern database technologies.

What are the basic components of a database?

There are five major components in a database environment: data, hardware, software, people and procedures. The data is a collection of facts, typically related. The hardware is the physical devices in the database environment. Operating systems, database management systems and applications make up the software.

What is a basic database?

The basic electronic information storage unit. A database is a collection of information organized to provide efficient retrieval. The collected information could be in any number of formats (electronic, printed, graphic, audio, statistical, combinations). There are physical (paper/print) and electronic databases.