PostgreSQL and Snapshot isolation

Shortcuts: Differences, Similarities, Jaccard Similarity Coefficient, References.

Difference between PostgreSQL and Snapshot isolation

PostgreSQL vs. Snapshot isolation

PostgreSQL, often simply Postgres, is an object-relational database management system (ORDBMS) with an emphasis on extensibility and standards compliance. In databases, and transaction processing (transaction management), snapshot isolation is a guarantee that all reads made in a transaction will see a consistent snapshot of the database (in practice it reads the last committed values that existed at the time it started), and the transaction itself will successfully commit only if no updates it has made conflict with any concurrent updates made since that snapshot.

Similarities between PostgreSQL and Snapshot isolation

PostgreSQL and Snapshot isolation have 7 things in common (in Unionpedia): Database transaction, Isolation (database systems), Multiversion concurrency control, Oracle Database, Serializability, SQL, Transaction processing.

Database transaction

A transaction symbolizes a unit of work performed within a database management system (or similar system) against a database, and treated in a coherent and reliable way independent of other transactions.

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Isolation (database systems)

In database systems, isolation determines how transaction integrity is visible to other users and systems.

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Multiversion concurrency control

Multiversion concurrency control (MCC or MVCC), is a concurrency control method commonly used by database management systems to provide concurrent access to the database and in programming languages to implement transactional memory.

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Oracle Database

Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is a multi-model database management system produced and marketed by Oracle Corporation.

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Serializability

In concurrency control of databases,Philip A. Bernstein, Vassos Hadzilacos, Nathan Goodman (1987): (free PDF download), Addison Wesley Publishing Company, Gerhard Weikum, Gottfried Vossen (2001):, Elsevier, transaction processing (transaction management), and various transactional applications (e.g., transactional memoryMaurice Herlihy and J. Eliot B. Moss. Transactional memory: architectural support for lock-free data structures. Proceedings of the 20th annual international symposium on Computer architecture (ISCA '93). Volume 21, Issue 2, May 1993. and software transactional memory), both centralized and distributed, a transaction schedule is serializable if its outcome (e.g., the resulting database state) is equal to the outcome of its transactions executed serially, i.e. without overlapping in time.

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SQL

SQL (S-Q-L, "sequel"; Structured Query Language) is a domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).

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Transaction processing

Transaction processing is information processing in computer science that is divided into individual, indivisible operations called transactions.

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The list above answers the following questions

What PostgreSQL and Snapshot isolation have in common
What are the similarities between PostgreSQL and Snapshot isolation

PostgreSQL and Snapshot isolation Comparison

PostgreSQL has 260 relations, while Snapshot isolation has 20. As they have in common 7, the Jaccard index is 2.50% = 7 / (260 + 20).

References

This article shows the relationship between PostgreSQL and Snapshot isolation. To access each article from which the information was extracted, please visit:

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