Database Concepts and Validation Rules

This video provides an introduction to databases, explaining their structure and types. It covers flat file and relational databases, highlighting the differences between them. The video also discusses database field types, primary keys, and validation rules, providing a foundational understanding of how databases are organized and managed.

What are databases primarily used for?

• Storing and organizing data

• Creating websites

• Designing graphics

• Writing code

Which type of database is covered in the IGCC syllabus?

• Graph databases

• NoSQL databases

• Relational databases

• Flat file databases

What does a flat file database consist of?

• Tables with different structures

• A single table with unique records

• One or more tables with identical records

• Multiple related tables

How are tables in a relational database connected?

• By using unique identifiers

• By using foreign keys

• By using common fields

• By using primary keys

What is beyond the scope of the IGCC course?

• Database field types

• Flat file databases

• Relational databases

• Database validation rules

Which field type is NOT mentioned in the video?

• Date/Time

• Array

• Boolean

• Text

What is a primary key used for in a database table?

• To validate data

• To store text data

• To link tables together

• To ensure each record is unique

What should be done if no field can naturally act as a primary key?

• Create an additional field to act as the primary key

• Use the first field as the primary key

• Skip the primary key

• Use a combination of fields as the primary key

Which of the following is NOT a type of validation rule mentioned?

• Format check

• Length check

• Presence check

• Syntax check

What is the purpose of validation rules in a database?

• To create primary keys

• To store data

• To link tables

• To ensure data integrity