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Serializable isolation level ensures that transactions are executed in a manner equivalent to some serial order
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A transaction in a database is a set of actions that are treated as single units.
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Using a DBMS does not require a deep understanding of programming languages to interact with the database.
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Virtual machines can run any Linux distribution
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One I/O operation per dataset in Non-clustered B+ trees sorting is extremely inefficient.
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The reduction factor expresses to what extent a term in the WHERE clause reduces the size of the query result
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Sorting of relations is required to perform merge operations
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PostgreSQL does not support JSON and XML data types
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If a transaction is in the "partially committed" state, it means the transaction is terminated from the program's side but needs to be checked using Concurrency Control measures.
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The 'REPEATABLE READ' isolation level guarantees that a transaction will always see the same set of rows returned by a query, even if other transactions insert new rows
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