Databases range from relational to cloud databases. Leading cloud database providers, like amazon, microsoft, and oracle, are making database selection and migration easier than ever Depending on the circumstances, migrating to the cloud can take place in a matter of minutes. After you have created a database link, you can use it in sql statements to refer to tables, views, and pl/sql objects in the other database by appending @dblink to the table, view, or pl/sql object name You can query a table or view in the other database with the select statement. A pluggable database (pdb) is a portable collection of schemas, schema objects, and nonschema objects that appears to an application as a separate database
At the physical level, each pluggable database has its own set of data files that store the data for the pluggable database. Learn how to implement oracle database best practices with training on database foundation, creation, backup, recovery, storage, and multitenant architecture solutions. A database administrator, or dba, is responsible for maintaining, securing, and operating databases and also ensures that data is correctly stored and retrieved.
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