Not Null and Primary Key
Creating and Using Tables
3-4 Oracle Database 2 Day Developer's Guide
5.
Click the default column that was created with the table.
6.
Enter the information for the first column in the table as follows:
For Column Name, enter
PERFORMANCE_ID
.
For Type, enter
VARCHAR2
.
For Size, enter
2
.
Leave the value of Not Null and Primary Key properties. You will come back to
this later, in
7.
Enter information for the second column as follows:
