The result of successfully committing a group of transactions is inconsistent with all possible orderings of running those transactions one at a time. To understand this concept, we have to imagine a ...

In this project I checked the given schedule is serializable or not. Different types of serializability checked: result, conflict, view It's a schedule in which transactions are aligned in such a way ...

Abstract: Several DBMS engines use Read Committed (RC) as a default isolation level, risking the loss of data integrity but allowing more concurrency. We propose ways to preanalyse (and then modify) ...

Abstract: Snapshot Isolation (SI) is a popular concurrency control mechanism that has been implemented by many commercial and open-source platforms (e.g. Oracle, Postgre SQL, and MS SQL Server 2005).

The SPOOL= option overrides the READ_ISOLATION_LEVEL= option. The ORACLE_73= option must be set to ORACLE_73=YES to use the SERIALIZABLE isolation level. If SPOOL=DBMS, SAS automatically sets ...

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