ODBC minimum SQL grammar essentials Which item below is explicitly included in the ODBC minimum SQL grammar definition across compliant drivers?

Difficulty: Medium

Correct Answer: Literals for DATE, TIME, and TIMESTAMP.

Explanation:


Introduction / Context:
ODBC defines three SQL grammar levels—Minimum, Core/Intermediate, and Full—to communicate what SQL constructs a driver must accept. Developers who target many databases often stick to the minimum grammar to ensure the broadest portability without relying on vendor-specific features.



Given Data / Assumptions:

  • We are asked about the minimum grammar, not intermediate or full.
  • Minimum grammar includes basic DML and literal support sufficient for common CRUD tasks.
  • Advanced DDL and procedural features are typically beyond minimum.


Concept / Approach:

The minimum grammar covers foundational constructs, notably the presence of DATE, TIME, and TIMESTAMP literals so applications can reliably pass temporal values. While minimum grammar also includes essential DML (such as SELECT, INSERT, UPDATE, DELETE), the options presented intentionally pair DML lists with the word “only,” which renders them inaccurate. Among the choices, the statement about temporal literals is the precise, unqualified element clearly associated with the minimum grammar set.



Step-by-Step Solution:

Interpret “minimum grammar” as the smallest portable subset across ODBC drivers.Identify temporal literals as explicitly mandated in the minimum set.Eliminate options using “only” that omit other required items (for example, SELECT is also part of minimum grammar).Choose the option that matches a known, explicit minimum-grammar requirement.


Verification / Alternative check:

ODBC grammar tables document DATE/TIME/TIMESTAMP literal formats in the minimum set, whereas views, stored procedures, and advanced DDL appear in higher grammar levels or vendor extensions.



Why Other Options Are Wrong:

  • A: “Only” is incorrect—minimum grammar also includes SELECT, among other basics.
  • B: Stored procedures are not part of the minimum requirement.
  • D: View DDL is not guaranteed at the minimum level.
  • E: User-defined types exceed minimum grammar scope.


Common Pitfalls:

  • Treating any vendor extension as portable ODBC minimum grammar.
  • Overlooking required literal formats for temporal data, leading to parsing errors.


Final Answer:

Literals for DATE, TIME, and TIMESTAMP.

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