Updating the Database

  • Elizabeth Lynch
Part of the Macmillan Computer Science Series book series (COMPSS)


In this chapter we will discuss the various ways of updating tables. You will learn the commands to enter new rows, alter existing data items, delete rows - and recover from mistakes! We will also discuss ways of transferring data from one table to another, and how to ‘import’ data from a non-SQL file into an SQL table.


Unique Constraint Target Figure Original Table Column Width Employee Number 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Elizabeth Lynch 1990

Authors and Affiliations

  • Elizabeth Lynch

There are no affiliations available

Personalised recommendations