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Structured query language (SQL)
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Tables, keys, and queries

Tables, keys, and queries

Student table and Loan table linked by StudentID to show the primary key and foreign key relationship SQL is the language used to retrieve and change data in relational databases. A table stores one type of thing, each row is a record, and each column is a field.

Structured query language (SQL) Lesson

  1. GCSE
  2. /Computer Science
  3. /Structured query language (SQL)

Step-by-step lessons on AQA GCSE Computer Science Structured query language (SQL). Each one builds up to exam-style questions. Build strong foundations in binary, logic and core programming constructs before moving on to the more complex algorithm design and evaluation questions.

Lessons