CA 40 – Alter Tables

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This exercise demonstrates using ALTER TABLE to enforce data integrity: setting NOT NULL on email, adding a unique constraint on usernames, applying a CHECK constraint to prevent non‑positive prices, and defining a default status for orders.
#ALTER TABLE #constraints #defaults #SQL #data integrity #unique #check #database.
29/03 16:37 dev.to
5 Πηγές

CA 40 – Alter Tables

ALTER TABLEconstraintsdefaultsSQLdata integrityunique
29/03 19:11 dev.to

Alter Tables

POLITICS
29/03 19:20 dev.to

Alter Tables

DATABASETUTORIALPOLITICSSQLBEGINNERS
29/03 19:52 dev.to

Alter Tables

SQLDATABASETUTORIALBEGINNERSPOLITICS
29/03 20:26 dev.to

CA 40 - Alter Tables

POLITICS
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