How-To Geek on MSN
Microsoft Excel isn't a database, please stop using it like one
Excel offers no such constraint. If someone is determined to enter bad data, they can simply paste values over a validated range or open the file in another program to completely bypass the rules I ...
RIGHT JOIN (or RIGHT OUTER JOIN): It’s the opposite of a LEFT JOIN. It keeps all rows from the right table and matches from ...
In most cases, you can compare schemas, databases, or tables. However, some databases (such as SQLite and Firebird) do not have catalogs and schemes that can be compared. In this case (and only for ...
CREATE DATABASE hospital_db; USE hospital_db; CREATE TABLE users ( id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(100), email VARCHAR(100) UNIQUE, password VARCHAR(255), role ...
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