1D0-525 · Question #145
What SQL command set do most relational database management system (RDBMS) servers support?
The correct answer is C. ANSI SQL. See the full explanation below for the reasoning.
Question
What SQL command set do most relational database management system (RDBMS) servers support?
Options
- AXPath
- BT-SQL
- CANSI SQL
- DISO SQL
How the community answered
(32 responses)- A3% (1)
- B6% (2)
- C75% (24)
- D16% (5)
Community Discussion
7
Orla P.Feb 20, 2026ANSI SQL is the correct answer. It is the standardized SQL dialect that virtually every major RDBMS vendor implements as a baseline, which is exactly why the question asks about broad support across systems rather than a vendor-specific extension like T-SQL, which belongs to Microsoft SQL Server and Sybase only.
Prof. SaraFeb 20, 2026Honestly, I circled D first because SQL is in fact maintained as an ISO standard and I know some vendors specifically call out ISO compliance in their documentation. What snapped me back was remembering the blueprint language itself, which frames interoperability around ANSI SQL as the common baseline that vendors from Oracle to MySQL to PostgreSQL all advertise support for, even when they bolt on proprietary extensions afterward. T-SQL in option B is a trap the exam loves, because it is real and widely used, but it is Microsoft and Sybase territory only, not a universal standard. XPath in A is for navigating XML documents, so if you see that in an RDBMS context, treat it as a distractor and move on fast.
Luis F.Feb 23, 2026That ISO versus ANSI distinction is real, Prof. Sara, and worth drilling because ANSI SQL is the one that gets called out in most vendor interoperability docs while ISO is the more formal body behind it, though they share the same standard.
Luis F.Mar 5, 2026ANSI SQL is the one you want here, C is correct. The American National Standards Institute published a standard for SQL that basically every major RDBMS out there, think MySQL, PostgreSQL, Oracle, even SQLite, uses as the common baseline for stuff like SELECT, INSERT, CREATE TABLE, and so on. T-SQL is actually a Microsoft thing specific to SQL Server and Azure SQL, so that one trips a lot of people up on exams. XPath is totally different territory, that is for querying XML documents, not relational databases. Quick question for anyone who knows this better than me, does that mean if I write a query using only standard ANSI SQL syntax, it should technically run on any RDBMS without modification, or are there still enough vendor-specific quirks that you would always need to test it on each platform?
Lena V.Mar 9, 2026T-SQL is Microsoft-only, so C is the universal answer.
Ola B.Mar 11, 2026C is universal in the sense that it underpins most runtimes, but SQL itself predates T-SQL and runs on plenty of non-Microsoft engines, so if Lena means query languages broadly, standard SQL is the more precise pick there.
Ola B.Feb 26, 2026ANSI SQL is the right call here. Spin up any two RDBMS servers side by side, say MySQL and PostgreSQL, and you will find that a basic SELECT with WHERE and JOIN works on both because they both implement the ANSI SQL standard as their common baseline.