KwickClips Databases and SQL · 40 sec · free
What is a record?
Short answer. One row: all the data about one item.
Why can a title not be the primary key?
Two books can share a title.
Parts of a table
| Word | Means |
|---|---|
| Field | a column |
| Record | a row |
| Primary key | unique field |
Remember
| Field is a column |
| Record is a row |
Exams mix these up. Do you know which is which? Learn three words. A field is one column. A record is one row. A primary key is a field unique for every record. Quick check. Field is a column. Record is a row.
This clip is from the full lesson: SQL for Cambridge IGCSE: Single-table Databases and Queries — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 10 Computer Science (0478)
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