EXIN SQL Foundation

No. This is an independent study page written for candidates preparing for the EXIN SQL Foundation exam. It is not affiliated with, endorsed by or operated by EXIN, and it contains no official questions, answers or syllabus text. Use it alongside EXIN's own published information about the certification.

We cannot state this reliably. EXIN's certification page for SQL Foundation returned a 'Page not found' error when checked, so no item count or time limit was available from the source. Confirm both directly with EXIN before you book, and plan your practice sessions around the confirmed duration once you have it.

These figures are not published in the source we could verify, so we report them as unknown rather than guess. Passing scores and fees vary by certification and region and are revised periodically. Check the current EXIN certification page or contact EXIN directly for the authoritative passing score and fee.

We could not confirm the delivery format from the source. EXIN certifications are commonly offered through remote-proctored or test-centre delivery, but do not assume this for SQL Foundation. Verify the format, whether any practical SQL component exists, and any permitted reference materials with EXIN before exam day.

Most candidates find the fundamentals approachable but lose marks on joins, NULL handling and aggregation subtleties. If you have never written SQL, expect several weeks of regular hands-on practice. If you already query databases at work, focused revision on syntax precision and edge cases is usually enough.

The retake policy is not stated in the source we could verify, so we cannot give a waiting period or a retake fee. EXIN's terms for resits are set per certification and can change. Ask EXIN or your accredited training provider before booking so you know the cost and timing of a second attempt.

We cannot confirm a validity period from the source. Some EXIN certifications are lifelong, others are tied to a version of a syllabus, but we will not assert either for SQL Foundation without verification. Check the current certification terms with EXIN if validity matters for your employer or client requirements.

Start with SELECT fundamentals: projection, WHERE filtering, comparison and logical operators, NULL behaviour, ORDER BY and DISTINCT. Then move to aggregation with GROUP BY and HAVING, followed by joins. Only after those are comfortable should you tackle data definition, constraints, views and indexes, which build on a clear picture of how tables relate.

Using WHERE when HAVING is required, forgetting that NULL comparisons need IS NULL, misjudging inner versus outer joins, and assuming GROUP BY output order without ORDER BY. Also common: confusing DDL with DML, choosing a data type too narrow for the values, and omitting a join condition, which produces a Cartesian product.

Write queries by hand against a small sample schema rather than reading worked examples. Practise predicting result sets before running them, then check. Review your error log, focusing on join logic, aggregate filtering and NULL handling. Re-read the data type and constraint material, and confirm exam logistics, identification requirements and any permitted materials.