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15 December 2024

  • 13:0313:03, 15 December 2024 diff hist +4,665 N Distributed Two-Phase LockingCreated page with "'''Distributed Two-Phase Locking (Distributed 2PL)''' is a concurrency control protocol used in distributed database systems to ensure global serializability. In this protocol, each site manages locks independently while coordinating with other sites to maintain consistency across the distributed system. ==Key Concepts== *'''Global Serializability:''' Ensures that the execution of distributed transactions is equivalent to a serial execution. *'''Distributed Lock Manageme..." current Tag: Visual edit
  • 12:4812:48, 15 December 2024 diff hist +4,224 N Primary Copy Two-Phase LockingCreated page with "'''Primary Copy Two-Phase Locking (2PL)''' is a concurrency control protocol used in distributed database systems where a primary copy of each data item is designated for lock management. Transactions must obtain locks from the primary copy of the data item to ensure consistency and serializability across the system. ==Key Concepts== *'''Primary Copy:''' A specific node in the distributed system is designated as the authoritative source for managing locks for a particula..." current Tag: Visual edit
  • 12:3612:36, 15 December 2024 diff hist +3,711 N Primary Site Two-Phase LockingCreated page with "'''Primary Site Two-Phase Locking (2PL)''' is a variant of the Two-Phase Locking protocol used in distributed databases. In this approach, one node is designated as the primary site for each data item, and it coordinates the locking and transaction processing to ensure serializability across the system. ==Key Concepts== *'''Primary Site:''' A designated node that manages all lock requests for a specific data item. *'''Global Serializability:''' Ensures that all transacti..." current Tag: Visual edit
  • 12:3512:35, 15 December 2024 diff hist +5,341 N Distributed DatabaseCreated page with "'''Distributed Database''' is a collection of databases distributed across multiple physical locations that function as a single logical database. Each site can operate independently while participating in a unified database system through communication over a network. ==Key Concepts== *'''Data Distribution:''' Data is distributed across multiple sites based on factors like performance, reliability, and locality. *'''Transparency:''' Users interact with the distributed d..." current Tag: Visual edit
  • 12:2912:29, 15 December 2024 diff hist +4,523 N Distributed ComputingCreated page with "'''Distributed Computing''' is a field of computer science that involves a collection of independent computers working together as a single cohesive system. These computers, or nodes, communicate over a network to achieve a common goal, such as solving complex problems, processing large datasets, or enabling fault-tolerant services. ==Key Concepts== *'''Distributed System:''' A collection of independent computers that appear to the user as a single system. *'''Concurrenc..." current Tag: Visual edit
  • 12:2712:27, 15 December 2024 diff hist +4,991 N Distributed Query ProcessingCreated page with "'''Distributed Query Processing''' is the process of executing database queries across multiple interconnected nodes in a distributed database system. It involves decomposing a high-level query into sub-queries that are executed on different nodes, combining the results, and presenting a unified output to the user. ==Key Concepts== *'''Distributed Database:''' A collection of interconnected databases located on different physical sites. *'''Query Decomposition:''' Breaki..." current Tag: Visual edit

11 December 2024

  • 17:4917:49, 11 December 2024 diff hist +4,608 N Serializable (Database)Created page with "'''Serializable''' is the highest level of isolation in database transaction management, ensuring that the outcome of concurrent transactions is equivalent to some sequential (serial) execution of those transactions. It prevents issues like dirty reads, non-repeatable reads, and phantom reads, guaranteeing the consistency of the database. ==Key Concepts== *'''Isolation Level:''' Serializable is one of the Isolation Levels defined in the SQL standard, providing the st..." current Tag: Visual edit

10 December 2024

21 November 2024

  • 22:4122:41, 21 November 2024 diff hist +4,216 N 금 시세Created page with "'''금 시세'''는 금의 현재 시장 가격을 의미하며, 국제 및 국내 시장에서 실시간으로 변동한다. 금 시세는 투자, 제조, 장신구 제작 및 중앙은행의 정책 결정에 중요한 기준으로 사용되며, 다양한 경제적 요인에 의해 영향을 받는다. 보통 한국에서는 "금값"이라고 한 단어로 쓰기도 한다. ==금 시세의 결정 요인== *'''국제 금 시세''' **금은 국제 시장에서 미국 달..." current Tag: Visual edit