Compară metode

	Controlul concurenței	Managementul tranzacțiilor
Domeniu	Sisteme informaționale	Sisteme informaționale
Familie	Process / pipeline	Process / pipeline
Anul apariției	1978	1981
Autorul original	Jim Gray and David Reed	Jim Gray and others (IBM)
Tip	Database coordination mechanism	Database reliability mechanism
Sursa seminală	Gray, J. (1981). The transaction concept: Virtues and limitations. VLDB Endowment, 7(6), 519-539.	Gray, J. (1981). The transaction concept: Virtues and limitations. VLDB Endowment, 7(6), 519-539.
Denumiri alternative	locking, MVCC	ACID transactions, transaction control
Înrudite	1	1
Rezumat	Concurrency control is the set of mechanisms used to coordinate concurrent transactions accessing shared data without corrupting the database. Formalized by database theorists in the 1970s-1980s, concurrency control ensures that multiple simultaneous transactions produce the same result as if they executed sequentially (serializability).	Transaction management is the mechanism by which database systems ensure reliable execution of multiple interdependent operations as atomic units. Formalized by Jim Gray and colleagues in the 1980s, transactions guarantee ACID properties (Atomicity, Consistency, Isolation, Durability) that protect data integrity even in the face of failures and concurrent access.