CHAPTER 3

image

Data Definition, Part I

This short chapter is the first one about data definition with SQL. It’s intended to get you started using SQL for data retrieval as soon as possible. Therefore, this chapter covers only the data definition basics, such as how to create simple tables using standard datatypes. In Chapter 7, we will revisit data definition with SQL and explore topics such as indexes, synonyms, and constraints.

This chapter is mainly theoretical in nature in that it still offers no hands-on exercises and only a few examples. In the next chapter, you will start writing SQL commands yourself.

The first section introduces the concept ...

Get Beginning Oracle SQL: for Oracle Database 12c, Third Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.