sql server - Relationship between databse tables -
i have existing db schema this.is there way create kind of referential integrity between these 2 tables. kind of relationship ? many many 2 classes
student
table:
id name courseid ------------------------ 1 student1 100023 2 student2 100023 3 student3 100024 4 student4 null
course
table:
id courseid coursename -------------------------- 1 100023 course1 2 100022 course2 3 100024 course3 4 100023 course6
id
primary key in both tables. courseid
column relationships.
definitely. can create foreign key constraint between student.courseid , course.courseid. can either through sql server management studio directly or using alter table/add constraint statement. personally, find management studio easiest use.
do search on "sql foreign key constraints" , should find w3schools (or similar) explaining need know started them.
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