The special operator used to check whether an attribute value is within a range of values is _____.Select one:a.LIKEb.INc.NULLd.BETWEEN

Break Down the Problem

1. Identify the purpose of the special operator in the context of databases.
2. Analyze the options provided to determine which one correctly checks if an attribute value falls within a specified range.

Relevant Concepts

1. LIKE: This operator is used for pattern matching in SQL queries.
2. IN: This operator checks if a value matches any value within a set of specified values.
3. NULL: This is a marker used to indicate that a data value does not exist in the database.
4. BETWEEN: This operator is specifically used to filter the result set within a certain range.

Analysis and Detail

• The correct operator should allow for the specification of a minimum and maximum value, thereby determining if an attribute value falls inclusively between two endpoints.
• LIKE and IN do not fulfill this requirement as they serve different purposes.
• NULL is not applicable in checking value ranges.
• BETWEEN is designed to check if a value lies within a range of two values.

Verify and Summarize

After reviewing each option and their respective functionalities in SQL, it is clear that the operator that specifically checks whether an attribute value is within a range of values is:

Final Answer

d. BETWEEN