What describes the attributes of a table that define the data types?

What describes the attributes of a table that define the data types?

• A. Schema
• B. Rows/records
• C. Primary key
• D. Fields/columns

Answer: (D)

The data type for each piece of information in a table is defined by its columns. A table is made up of fields (or columns), and every column has a name and an associated data type (such as integer, varchar, date, or boolean). This column-level definition determines what kind of values can be stored, how much space they occupy, and what operations are valid on them. Rows contain the actual data, but the attributes that specify what data types are allowed come from the columns themselves. The broader concept of a schema describes the overall structure of the database, including tables and their columns, relationships, and constraints. However, when you’re identifying where the data types are defined for a table, you’re looking at the columns (fields) themselves. Primary keys are about uniqueness constraints, not data type definitions. Rows represent the actual data, not the definitions.

The data type for each piece of information in a table is defined by its columns. A table is made up of fields (or columns), and every column has a name and an associated data type (such as integer, varchar, date, or boolean). This column-level definition determines what kind of values can be stored, how much space they occupy, and what operations are valid on them. Rows contain the actual data, but the attributes that specify what data types are allowed come from the columns themselves.

The broader concept of a schema describes the overall structure of the database, including tables and their columns, relationships, and constraints. However, when you’re identifying where the data types are defined for a table, you’re looking at the columns (fields) themselves. Primary keys are about uniqueness constraints, not data type definitions. Rows represent the actual data, not the definitions.