GCSE Computer Science Revision — SQL & Databases
Revise SQL & Databases for GCSE Computer Science with a topic explanation, worked example and common mistakes. Check the board notes for specification differences.
At a glance
- What StudyVector is
- An exam-practice platform with board-aligned questions, explanations, and adaptive next steps.
- This topic
- SQL & Databases in GCSE Computer Science: explanation, examples, and practice links on this page.
- Who it’s for
- Students revising GCSE Computer Science for UK exams.
- Exam boards
- Check your course page and the topic board notes for supported specifications.
- Free plan
- Sign up free to use tutor paths and feedback on your answers. Free access is Free daily revision · No card required. Pricing
- What makes it different
- Syllabus-shaped practice and progress tracking—not generic AI answers.
This page includes a topic explanation and a worked example. Check your course for current practice coverage.
Next in this topic area
Next step: Testing, Robustness & Defensive Design
Continue in the same course — structured practice and explanations on StudyVector.
Go to Testing, Robustness & Defensive DesignTopic explanation
What is SQL & Databases?
A database is a structured collection of data, and SQL (Structured Query Language) is the standard language used to interact with them. At GCSE, you need to understand how to use SQL to perform queries on a single table, including using SELECT to retrieve data, FROM to specify the table, WHERE to filter results, and ORDER BY to sort them.
Board notes: AQA, Edexcel, and OCR all require knowledge of basic SQL SELECT statements for querying a single table. You should be comfortable with SELECT, FROM, WHERE, and ORDER BY.
Step-by-step explanationWorked examples
Worked example
Given a table of students called `Students` with columns `FirstName`, `LastName`, and `Score`. To find all students with a score over 80 and list them alphabetically by last name, the SQL query would be: `SELECT FirstName, LastName FROM Students WHERE Score > 80 ORDER BY LastName ASC;`.
Practise this topic
Start with low-focus cards for SQL & Databases, then move into full exam-style practice when you want the heavier session.
Common mistakes
- 1Confusing the database with the database management system (DBMS). The database is the data itself; the DBMS is the software used to manage it (like Microsoft Access or MySQL).
- 2Forgetting to use quote marks for string values in a WHERE clause, for example, `WHERE name = Bob` instead of the correct `WHERE name = 'Bob'`.
- 3Mixing up the order of the clauses. The basic order is `SELECT ... FROM ... WHERE ... ORDER BY ...`.
SQL & Databases exam questions
Check the available question sets for SQL & Databases. Use your course and exam board to confirm which practice is relevant.
SQL & Databases exam questionsGet help with SQL & Databases
Get a personalised explanation for SQL & Databases from the StudyVector tutor. Ask follow-up questions and work through problems with step-by-step support.
Open tutorSave your progress in SQL & Databases
Start a free account for low-focus question cards, feedback and Play routes across available topics. Free daily limits apply; no card required.
Continue your revision
A public question for SQL & Databases is still being reviewed. Your course page shows the topics currently available for practice.
Continue with SQL & Databases
Create a free account to keep your course choice and save your practice progress.
Start free low-focus cardsAlready have an account? Log in
Frequently asked questions
What is a primary key in a database?
A primary key is a field in a table that uniquely identifies each record. For example, a `StudentID` number would be a good primary key as no two students will have the same one.
What does the `*` symbol do in a SELECT statement?
The asterisk (`*`) is a wildcard that means 'all columns'. So, `SELECT * FROM Students` will retrieve all data for all columns from the Students table.