Database Management Systems

Step 1: Identify SQL usage.
SQL is a language used to store, retrieve, and manage data in relational databases.
Step 2: Analyze the given options.
Structured Question Language is incorrect terminology.
Standard Query Logic and Simple Query Logic are not official expansions.
Structured Query Language is the internationally accepted full form of SQL.
Step 3: Conclusion.
Therefore, SQL stands for Structured Query Language.