True or False If a column in a database table contains no data, it is said to be null.

In SQL, explain the most important data integrity restrictions.

31-Create a SQL statement to Display the number of clients for each CType with having less than 2 clients in the CLIENTS table.

A table schema field record is a record in a database that contains a single piece of information. O key

SQL Developer provides a graphical user interface that can be used to send SQL commands to the Oracle Database Management System.   Question 30 options:   1) True   2) False

One thing to keep in mind when you remove data from tables, rows, and columns is

order db orderid int custid int itemcode int orderquantity int deliverydate date modeofpayment char(1) date_of_order date

If an application calls for efficient lookup records by key value, fast insertion and deletion of records based on the key value, as well as be able to return all the records that have key value fall in a certain range, which of the following data structure is the best candidate?   Question 44 options:   Linked list   Hash table   Heap   Binary search tree   Array

Why is it important to write to a log before changing the database values?

SQL : Write a statement that allows the same classmate to modify (insert, update, and delete) the data of the newEmpXX table