User contributions for Betripping
From CS Wiki
15 December 2024
- 13:0313:03, 15 December 2024 diff hist +4,665 N Distributed Two-Phase Locking Created 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 Locking Created 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 Locking Created 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 Database Created 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 Computing Created 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 Processing Created 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
- 16:4116:41, 10 December 2024 diff hist +40 Main Page No edit summary current Tag: Visual edit: Switched
- 16:3616:36, 10 December 2024 diff hist +595 Main Page No edit summary Tag: Visual edit: Switched
- 16:3316:33, 10 December 2024 diff hist +19 N ARIES (Database) Redirected page to ARIES current Tags: New redirect Visual edit
- 16:2916:29, 10 December 2024 diff hist −11 ARIES No edit summary current Tag: Visual edit
- 16:2616:26, 10 December 2024 diff hist +711 ARIES No edit summary Tag: Visual edit: Switched
- 16:2316:23, 10 December 2024 diff hist +3,853 N Write-Ahead Logging Created page with "'''Write-Ahead Logging (WAL)''' is a technique used in database management systems (DBMS) to ensure the '''durability''' and '''atomicity''' of transactions. WAL ensures that all changes to the database are recorded in a log before the changes are written to the database itself. This enables reliable crash recovery and consistency in case of a failure. ==Key Concepts== *'''Sequential Logging:''' All modifications are recorded sequentially i..." current Tag: Visual edit
- 16:1916:19, 10 December 2024 diff hist +2,966 N Durability (ACID) Created page with "'''Durability''' is one of the four key properties in the ACID Properties of database transactions, ensuring that once a transaction has been committed, its changes are permanently saved in the database. This guarantees that data is not lost even in the event of a system crash, power failure, or hardware malfunction. ==Key Concepts== *'''Transaction Commit:''' Durability ensures that when a transaction is committed, its effects are persisted. *'''Non-..." current Tag: Visual edit
- 16:0216:02, 10 December 2024 diff hist +452 ARIES No edit summary Tag: Visual edit: Switched
- 16:0116:01, 10 December 2024 diff hist +3,065 ARIES No edit summary Tag: Visual edit
- 15:3915:39, 10 December 2024 diff hist +1,769 N Category:Database Created page with "Database category includes topics related to the design, implementation, and management of databases. It covers various database types, concepts, protocols, and tools that enable efficient storage, retrieval, and manipulation of data. ==Topics in This Category== The following are key areas within the database category: ===Database Concepts=== *Relational Databases *NoSQL Databases *Data Warehousing *Database Normalization *ACID Properties *Database..." current Tag: Visual edit
- 15:3815:38, 10 December 2024 diff hist +4,134 N Multiple Granularity Locking Created page with "'''Multiple Granularity Locking''' is a concurrency control mechanism used in database systems to improve performance and manage locks at various levels of granularity, such as tuples, pages, tables, or the entire database. By allowing transactions to lock data items at different granular levels, this method optimizes the balance between concurrency and locking overhead. ==Key Concepts== *'''Lock Granularity:''' Refers to the size of the data item on which a lock is appl..." current Tag: Visual edit
- 15:3415:34, 10 December 2024 diff hist +4,455 N Phantom Record Created page with "'''Phantom Record''' refers to a data entry that appears in a dataset but does not correspond to a real-world entity or valid data point. Phantom records can occur due to system errors, data corruption, improper database handling, or intentional insertion during testing or attacks. ==Causes of Phantom Records== Phantom records can arise from various sources: *'''Data Entry Errors:''' Manual input mistakes resulting in duplicate or incorrect records. *'''System Errors:'''..." current Tag: Visual edit
21 November 2024
- 22:4122:41, 21 November 2024 diff hist +4,216 N 금 시세 Created 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