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Learning PostgreSQL 10

Learning PostgreSQL 10

By : Juba, Volkov
2.3 (6)
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Learning PostgreSQL 10

Learning PostgreSQL 10

2.3 (6)
By: Juba, Volkov

Overview of this book

PostgreSQL is one of the most popular open source databases in the world, supporting the most advanced features included in SQL standards. This book will familiarize you with the latest features released in PostgreSQL 10. We’ll start with a thorough introduction to PostgreSQL and the new features introduced in PostgreSQL 10. We’ll cover the Data Definition Language (DDL) with an emphasis on PostgreSQL, and the common DDL commands supported by ANSI SQL. You’ll learn to create tables, define integrity constraints, build indexes, and set up views and other schema objects. Moving on, we’ll cover the concepts of Data Manipulation Language (DML) and PostgreSQL server-side programming capabilities using PL/pgSQL. We’ll also explore the NoSQL capabilities of PostgreSQL and connect to your PostgreSQL database to manipulate data objects. By the end of this book, you’ll have a thorough understanding of the basics of PostgreSQL 10 and will have the necessary skills to build efficient database solutions.
Table of Contents (17 chapters)
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SQL fundamentals


SQL is used to manipulate the data in the database and query the database. It is also used to define and change the structure of the data--in other words, to implement the data model. This you already know from the previous chapters.

In general, SQL consists of three parts:

  • Data definition language (DDL)
  • Data manipulation language (DML)
  • Data control language (DCL)

The first part is used to create and manage the structure of the data, the second part is used to manage the data itself, and the third part—to control access to the data. Usually, the data structure is defined only once and then it is rarely changed. However, data is constantly inserted into the database, changed, or retrieved. For this reason, DML is used more often than DDL.

SQL is not an imperative programming language, which makes it different from many other languages. To be more specific, one cannot define a detailed algorithm of how the data should be processed. This might make an impression of lack of control...

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