Relational database tables require a common data item, or shared key field, in both tables.Group startsTrue or FalseTrue, unselectedFalse, unselectedGroup ends
Question
Relational database tables require a common data item, or shared key field, in both tables.
Group starts
True or False
True, unselected
False, unselected
Group ends
Solution
Answer
True.
In relational databases, tables are designed to be related to one another through a process called normalization. This involves creating a shared key field, also known as a primary key in one table and a foreign key in the related table. The primary key serves as a unique identifier for each record in the table, while the foreign key allows for the association or linkage between records in different tables.
This design enables database queries to retrieve and join data from multiple tables effectively. For instance, in an employee database, the “Employees” table may have an “EmployeeID” as the primary key, which can be referenced in a “Departments” table as a foreign key to indicate which department each employee belongs to. This relational structure ensures data integrity and reduces redundancy, facilitating easier data management and retrieval across the entire database system.
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