このレッスンは、現在英語のみです。
Rules the database enforces
Your app can check data, but bugs happen and scripts skip checks. Constraints are rules stored in the table itself: the database refuses any row that breaks them, whoever sends it.
このレッスンは、現在英語のみです。
Your app can check data, but bugs happen and scripts skip checks. Constraints are rules stored in the table itself: the database refuses any row that breaks them, whoever sends it.