When two database tables are linked, one of them must have a foreign key that refers to the primary key of another table. A database entity is a person, place, thing, object, or any other item about which data is kept in the database in strict terms.
There are 3 different types of relations in the database:
one-to-one.
one-to-many, and.
many-to-many.
Database connections are associations between tables that are built by retrieving data using join statements.
A database is a collection of interconnected data. These data are kept in tables that are coupled to one another, and queries are used to search and retrieve data. A table is made up of rows and columns, and it stores data from databases.
Right-click in the Table Designer and select Relationships from the shortcut menu for the table containing the foreign key you want to examine. Select the relationship with properties you want to see in the Foreign Key Relationships dialogue box.
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K
Khushi Kumari Yadav
5
how can i get pdf of this session
A
Arvind Kumar
5
very nice course for begginer to under stand
H
hemant
5
Hello sir, explaination is excellent. I have a request please send the db in excel or SQL file
J
Juboraj Juboraj
4
Explain details & easy to understand.
A
Aman Kanaujia
4
All good , but provide the data also for the assignment , Without data the interest is less day by day from the course. So, try to solve this problem as asap.
S
Snehil
4
Everything is good but keyboard sounds more harsh and overlap your voice whereas this course is best.
F
FAROOK MOHAMMAD
5
Hello sir, explaination is excellent. I have a request please send the db in excel or SQL file.
H
Hari Prakash
4
In SQL Join Function's 2nd video - Teacher's voice dose not match with background content that are plays
A
Aakash Mavar
5
Hello sir
Mera Abhi graduation hu he Mene Mechanical Engineering BTech ki Hai me Data analysis me Apna career Bana skat ho Kya
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