Language classification — evaluate the statement.\n\n"SQL is a data sublanguage."

Difficulty: Easy

Correct Answer: Valid (SQL is widely described as a data sublanguage)

Explanation:


Introduction / Context:
SQL (Structured Query Language) is often characterized as a data sublanguage because it focuses on declaring data structures and performing data manipulation within a database rather than providing full general-purpose programming constructs like arbitrary looping and comprehensive I/O facilities. This question verifies that understanding.


Given Data / Assumptions:

  • SQL defines data (DDL), manipulates data (DML), controls access (DCL), and manages transactions (TCL).
  • SQL is designed to be used alone or embedded within host languages or tools.
  • “Sublanguage” reflects scope limited to data concerns.


Concept / Approach:
Unlike general-purpose languages (for example, Java, Python, C#), SQL is declarative for data access and definition. While some procedural extensions exist (PL/SQL, T-SQL), the core language is specialized for relational data tasks. Hence, describing SQL as a data sublanguage is accurate and common in academic and industry texts.


Step-by-Step Solution:

Identify SQL’s domain: defining and manipulating relational data.Recognize the lack of full general-purpose constructs in standard SQL.Acknowledge procedural extensions are outside the core.Conclude the statement is valid.


Verification / Alternative check:
Consult database textbooks and vendor documentation that routinely refer to SQL as a data sublanguage, often embedded or invoked via APIs/ODBC/JDBC.


Why Other Options Are Wrong:

  • Claiming SQL is purely general-purpose ignores its domain specialization.
  • Limiting to NoSQL, embedded cases, or transactions confuses usage patterns with classification.


Common Pitfalls:
Equating T-SQL/PL-SQL procedural features with the SQL standard; believing that because SQL can express logic in queries it becomes a full GP language.


Final Answer:
Valid (SQL is widely described as a data sublanguage)

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