3. Introduction to Key-Value Databases
“Everything should be made as simple as possible, but no simpler.”
—ALBERT EINSTEIN
Topics Covered In This Chapter
From Arrays to Key-Value Databases
Essential Features of Key-Value Databases
Properties of Keys
Characteristics of Values
Key-value databases are the simplest of the NoSQL databases and are a good place to start a detailed examination of NoSQL database options. As the name implies, the design of this type of data store is based on storing data with identifiers known as keys. This chapter introduces key-value data structures by starting with an even simpler data structure: the array.
A key-value data store is a more complex variation on the array data structure. Computer scientists have extended ...
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