Σύγκριση μεθόδων

	Έλεγχος Ταυτοχρονισμού	Διαχείριση Συναλλαγών
Πεδίο	Πληροφοριακά Συστήματα	Πληροφοριακά Συστήματα
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	1978	1981
Δημιουργός	Jim Gray and David Reed	Jim Gray and others (IBM)
Τύπος	Database coordination mechanism	Database reliability mechanism
Θεμελιώδης πηγή	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.
Εναλλακτικές ονομασίες	locking, MVCC	ACID transactions, transaction control
Συναφείς	1	1
Σύνοψη	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.