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    A relational database is a type of database that stores and provides access to data points that are related to one another Relational databases are based on the relational model, an intuitive, straightforward way of representing data in tables
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    Starting in Oracle Database 21c, "database" refers specifically to the data files of a multitenant container database (CDB), pluggable database (PDB), or application container Database instance An instance is a named set of memory structures that manage database files
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