The syntax as given in Oracle built-in function, it is to convert lower case letters into upper case letters. The explanation given here is with examples. So that you use in your SQL program directly.
The COMMIT, ROLLBACK and Transaction are very important in terms of SQL. When you are a Oracle SQL developer you need to work with SQL developer always. Read more.
The post tells awesome tips on how to select a column is suitable to create index on it . In a table there many columns,only few are good to create index.
The best and quick reference SQL Devloper guide. The listed items highly useful to how effectively the SQL Developer tool can be used to improve productivity.