If you use SQL in your day-to-day work as a data analyst, data scientist, or data engineer, this popular pocket guide is your ideal on-the-job reference. You'll find many examples that address the language's complexities, along with key aspects of SQL used in Microsoft SQL Server, MySQL, Oracle Database, PostgreSQL, and SQLite.
Database Management Systems (DBMS).
You may have heard terms like PostgreSQL or SQLite, and be wondering how they are different from SQL. They are two types of Database Management Systems (DBMS), which is software used to work with a database.
This includes things like figuring out how to import data and organize it, as well as things like managing how users or other programs access the data. A Relational Database Management System (RDBMS) is software that is specifically for relational databases, or databases made up of tables.
ОГЛАВЛЕНИЕ.
Preface.
Chapter 1: SQL Crash Course.
Chapter 2: Where Can I Write SQL Code?.
Chapter 3: The SQL Language.
Chapter 4: Querying Basics.
Chapter 5: Creating, Updating, and Deleting.
Chapter 6: Data Types.
Chapter 7: Operators and Functions.
Chapter 8: Advanced Querying Concepts.
Chapter 9: Working with Multiple Tables and Queries.
Chapter 10: How Do I…?.
Index.
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