Views : 17,813,343
Genre: Education
Date of upload: Jul 2, 2018 ^^
Rating : 4.951 (4,159/336,022 LTDR)
RYD date created : 2022-04-09T20:51:35.02373Z
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(0:00) Introduction
(2:36) What is a Database?
(23:10) Tables & Keys
(43:31) SQL Basics
(52:26) MySQL Windows Installation
(1:01:59) MySQL Mac Installation
(1:15:49) Creating Tables
(1:31:05) Inserting Data
(1:38:17) Constraints
(1:48:11) Update & Delete
(1:56:11) Basic Queries
(2:08:37) Company Database Intro
(2:14:05) Creating Company Database
(2:30:27 ) More Basic Queries
(2:26:24) Functions
(2:45:13) Wildcards
(2:53:53) Union
(3:01:36) Joins
(3:11:49) Nested Queries
(3:21:52) On Delete
(3:30:05) Triggers
(3:42 12) FR Diagrams Intro
(3:55:53) Designing an ER Diagram
(4:08:34) Converting ER Diagrams to Schemas
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Two weeks ago I started doing this course thinking that it would be useful for my placements and today I'm here to let you know that because of your teaching I actually learnt DBMS and got placed in an MNC .The recruiter asked me about DBMS functions and in particular he asked me about group by function which I otherwise wouldn't have answered . I'm really grateful for you and thank you very much Sir for taking your time to explain DBMS to us.
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The error message "You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column" means that you are trying to update a table without specifying a WHERE clause that uses a key column.
In your case, the table studant has a primary key column called studant_id. When you update a table with a primary key, you must specify a WHERE clause that uses the primary key column to identify the rows that you want to update.
For example, the following query would update the major of the student with the studant_id of 1:
UPDATE studant
SET major="bio"
WHERE studant_id=1;
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@freecodecamp
4 years ago
Click the "JOIN" button below the video to support freecodecamp.org/!
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