Hydrogen ions diffuse down their concentration gradient through

Transaction control statements are used to either save modified data or to undo changes before they are committed.

Which of the following can be created so other users will not need to prefix a table owned by user Jeff with his schema name?

Explain the difference between truncating a table and deleting a table.

When the INSERT command is being used to enter data into a non-numeric column, the data must be enclosed in ____.

Discuss when you would consider adding an index on a column in a table. Discuss when you would consider using a bit-map index. Bonus points if you can tell me when Oracle automatically creates an index.

Which of the following is used to uniquely identify each record?

Which of the following is a valid constructor header for the Circle class that accepts the radius as a parameter?

What is the value of sum after this code sequence is executed?

Which is the appropriate loop construct to print out the names in a partially filled array String[] names, assume variables used in the code have been declared?