In this chapter we will explore two concepts that truly set a database management system apart from a file system. If you compare a file system to a database, you’ll discover many similarities between the two. We can create files in a file system, in the same way as we’ll create tables in a database. These files can be located in different directories, just as we have schemas or owners in the database. We can write data to these files, just as we insert rows into tables. However, two features that set the database apart from the file system in a dramatic fashion are transaction management and concurrency control.
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