16. Introduction to SQL -Installing Oracle SQL Plus, SQL Data Types, and Data Definition Language

Publicado em: 19 Julho 2020
no canal de: Coding Christi -Python, Java, SQL

1,310

Learn about various Open Source and Commercial Softwares for SQL
Install Oracle SQL Plus by using the following link (Steps explained in the video):
https://www.oracle.com/database/techn...
Learn about SQL data types and the Data Definition Language

Click on the following link to download/view the document containing the syntax of all the queries used in this video:
https://drive.google.com/file/d/1_1oA...

Review Questions:
1. What is an Open Source Database?
2. What is a Commercial Database?
3. What does d stand for in number(n, d) datatype in SQL?
4. What is the difference between char and varchar?
5. What is the difference between drop table and truncate table queries?
6. How can you create a table using another table?
7. Which of the following is used to change the datatype of a column?
a. alter table ... modify
b. alter table ... drop
c. alter table ... change
d. None of these

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