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Table Of Contents
CompTIA Data+: DAO-001 Certification Guide
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More often than not, data is stored in a database. Databases are simple places where data can be electronically stored and accessed. They can be stored on a single computer, a cluster, or even in the cloud. Databases come in every shape and size, but all of them fall into one of two categories:
If a database is structured, it follows a standardized format that allows you to set rules as to what kind of data can be expected and where. That is to say that there is, hopefully, a clear and logical structure to how the data is organized. There are two main database archetypes that the exam considers structured:
Defined rows and columns refer to tables or spreadsheets. This is the format that most people are familiar with and is, by far, the most common in the field of data analytics. Usually, every column in the grid represents...