In the fields of databases and transaction processing (transaction management), a schedule (or history) of a system is an abstract model to describe the...
20 KB (2,514 words) - 12:34, 28 May 2025
A database transaction symbolizes a unit of work, performed within a database management system (or similar system) against a database, that is treated...
12 KB (1,550 words) - 02:09, 25 May 2025
critical path method. Scheduling is important as an internal process in computer science, wherein a database transaction schedule is a list of actions...
17 KB (2,127 words) - 10:38, 22 January 2025
Two-phase locking (redirect from Rigorousness (databases))
name of the resulting set of database transaction schedules (histories). The protocol uses locks, applied by a transaction to data, which may block (interpreted...
7 KB (777 words) - 11:30, 17 December 2024
processes. The transaction-related mechanisms typically constrain the database data access operations' timing (transaction schedules) to certain orders...
19 KB (2,121 words) - 23:57, 3 May 2025
Rollback (data management) (category Transaction processing)
transaction log, but can also be implemented via multiversion concurrency control. A cascading rollback occurs in database systems when a transaction...
4 KB (397 words) - 20:16, 30 March 2025
Concurrency control (category Transaction processing)
that no committed transaction in a schedule has read data written by an aborted transaction. Such data disappear from the database (upon the abort) and...
24 KB (2,976 words) - 21:42, 15 December 2024
data through the enforcement of database transaction deadlines and include a mechanism (such as transaction scheduling policies) to maximize the number...
19 KB (2,747 words) - 05:03, 5 December 2023
to machines. Database transaction schedule, a list of actions from a set of transactions in databases Interval scheduling Key schedule, cryptographic...
2 KB (270 words) - 05:09, 7 April 2025
Corporation. It is a database commonly used for running online transaction processing (OLTP), data warehousing (DW) and mixed (OLTP & DW) database workloads. Oracle...
27 KB (1,619 words) - 10:42, 7 June 2025
changes in computer projects A database transaction schedule, also called a history, in the fields of databases and transaction processing Web browsing history...
6 KB (706 words) - 17:33, 6 April 2025
Purpose of Transaction (Section 4). An aggregate database of schedules 13D, 13G, 13F are provided by private service providers such as Edgar. Schedule 13G Schedule...
3 KB (435 words) - 14:46, 15 October 2022
Global serializability (category Transaction processing)
global schedule of transactions. A global schedule is the unified schedule of all the individual database (and other transactional object) schedules in a...
9 KB (996 words) - 21:52, 1 February 2025
(1980). The Scheduled Tribes of India (3rd ed.). Transaction Publishers. ISBN 978-0-87855-692-2. Bali, Surya (26 October 2018). "We are 'Scheduled Tribes'...
68 KB (5,506 words) - 05:48, 1 June 2025
System (IMS) – 1966. A joint hierarchical database and information management system with extensive transaction processing capabilities. Runs on OS/360...
14 KB (1,656 words) - 00:42, 24 August 2024
Thomas write rule (category Transaction processing)
example, consider a database with 3 variables (A, B, C), and two atomic operations C := A (T1), and C := B (T2). Each transaction involves a read (A or...
3 KB (519 words) - 22:58, 20 March 2023
Write–read conflict (category Transaction processing)
occurs when "a transaction requests to write an entity, for which an unclosed transaction has already made a read request." Given a schedule S S = [ T 1...
2 KB (249 words) - 18:06, 28 May 2025
architectures Concurrency control § Concurrency control mechanisms Database transaction schedule § Serializable Serializability Madnick 1968, p.19 Saltzer, Jerome...
7 KB (845 words) - 20:41, 24 November 2024
Read–write conflict (category Transaction processing)
occurs when a "transaction requests to read an entity for which an unclosed transaction has already made a write request." Given a schedule S S = [ T 1 T...
3 KB (325 words) - 08:37, 28 May 2025
Write–write conflict (category Transaction processing)
occurs when "transaction requests to write an entity for which an unclosed transaction has already made a write request." Given a schedule S S = [ T 1...
2 KB (247 words) - 15:22, 10 June 2025
Serializable may refer to: Serializable (databases), an attribute of a database transaction's schedule (history) capable of being serialized, or transformed...
238 bytes (55 words) - 11:31, 20 January 2024
and improve scheduling and performance of millions of Apache Spark tasks. The basic idea is to run a multi-node multi-core, transactional, highly-available...
7 KB (732 words) - 18:45, 12 February 2025
AXFR, is a type of DNS transaction. It is one of the many mechanisms available for administrators to replicate DNS databases across a set of DNS servers...
14 KB (1,859 words) - 17:39, 24 May 2025
Precedence graph (category Database management systems)
context of concurrency control in databases. It is the directed graph representing precedence of transactions in the schedule, as reflected by precedence of...
5 KB (757 words) - 19:00, 27 December 2023
Commitment ordering (category Transaction processing)
interoperable serializability techniques in concurrency control of databases, transaction processing, and related applications. It allows optimistic (non-blocking)...
93 KB (12,831 words) - 15:42, 21 August 2024
heart of the database and transaction system is Integrated Recovery. "Integrated" implies the integration of all data models, the transaction file manager...
3 KB (377 words) - 12:53, 19 July 2024
systems such as SANs. Transaction logs and temporary spaces are heavy consumers of I/O, and affect performance for all users of the database. Placing them appropriately...
5 KB (652 words) - 12:53, 16 April 2023
IBM Information Management System (category Database engines)
Management System (IMS) is a joint hierarchical database and information management system that supports transaction processing. Development began in 1966 to...
15 KB (1,719 words) - 08:13, 31 May 2025
PostgreSQL (category Client-server database management systems)
each write transaction, the master waits until at least one replica node has written the data to its transaction log. Unlike other database systems, the...
103 KB (8,668 words) - 19:59, 15 June 2025
YDB (Yet another DataBase) is a distributed SQL database management system (DBMS) developed by Yandex, available as open-source technology. YDB is a technology...
7 KB (708 words) - 04:24, 15 March 2025