Learn SQL: Foreign Key
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Learn SQL: Foreign Key
Foreign key is an attribute, or more of them, related to the primary key of another table. This rule ensures referential integrity in the database.
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i_simplify on Instagram: "Foreign Key ante confuse avvalsina topic kaadu bro 🔗 Oka table ni inko table tho connect cheyyadaniki use chese simple concept. Real-world example tho ardham ayite, SQL easy aipothundi 💡 Save cheskoni malli chudandi ✔️ @i__simplify 📘 TOPIC NOTES (FOREIGN KEY – SIMPLE) Foreign Key oka table ni inko table tho connect cheyyadaniki use avthundi Usually parent table lo unna Primary Key ni reference chestundi Two tables lo common column (like ID) valla link create avthundi
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i_simplify on Instagram: "Foreign Key ante confuse avvalsina topic kaadu bro 🔗 Oka table ni inko table tho connect cheyyadaniki use chese simple concept. Real-world example tho ardham ayite, SQL easy aipothundi 💡 Save cheskoni malli chudandi ✔️ @i__simplify 📘 TOPIC NOTES (FOREIGN KEY – SIMPLE) Foreign Key oka table ni inko table tho connect cheyyadaniki use avthundi Usually parent table lo unna Primary Key ni reference chestundi Two tables lo common column (like ID) valla link create avthundi
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