Summary
In this chapter, we looked at some advanced implementations of INSERT
and how we can manipulate data using the UPDATE
, ALTER
, and DROP
commands. It is very important to remember that the ALTER
command is used to update the schemas, while the update command is used to make changes in the data contained in the schemas. However, changes in the data need to managed correctly, or they will result in inconsistent data. In the next chapter, we will look at normalizing data to ensure that data integrity is maintained.