12
Using Databases
In this chapter, I will demonstrate how Node.js applications can use a relational database to store and query data. This chapter explains how to work directly with a database by executing SQL queries, and how to take a more hands-off approach with an Object Relational Mapping (ORM) package. Table 12.1 puts this chapter into context.
Table 12.1: Putting databases into context
|
Question |
Answer |
|
What are they? |
Databases are the most common means of persistently storing data. |
|
Why are they useful? |
Databases can store large volumes of data and enforce a data structure that makes it possible to perform efficient queries. |
|
How are they used? |
Databases are managed by database engines, which can be installed as ... |
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