MD-MVCC: Multi-version Concurrency Control for Schema Changes in Azure SQL Database

Summary: MD-MVCC: a multi-version concurrency control design in Azure SQL Database that allows schema changes to proceed without synchronizing with concurrent readers/writers by serving older schema versions under Snapshot Isolation. Implements end-to-end multi-versioned metadata (execution, caches, system tables) to enable online schema deployments with minimal availability impact and no measured runtime overhead. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID: 14085
Venue: VLDB
Year: 2025
Pagerank: 4.1945683e-05
Overall Rank: 10,764 | 25.12%
DOI: 10.14778/3750601.3750605

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Rank	Citing Paper	Year	Venue	Pagerank

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Showing 13 of 13 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank	Cited Paper	Year	Venue	Pagerank
23	A Critique of ANSI SQL Isolation Levels	1995	SIGMOD	0.00083894938
875	Algorithms for Creating Indexes for Very Large Tables Without Quiescing Updates	1992	SIGMOD	0.00015719411
1,432	An Empirical Evaluation of In-Memory Multi-Version Concurrency Control	2017	VLDB	0.00012017544
3,011	Update Rewriting and Integrity Constraint Maintenance in a Schema Evolution Support System: PRISM++	2011	VLDB	7.7183382e-05
3,374	Constant Time Recovery in Azure SQL Database	2019	VLDB	7.1635315e-05
3,757	Living in Parallel Realities – Co-Existing Schema Versions with a Bidirectional Database Evolution Language	2017	SIGMOD	6.7838281e-05
4,055	Online, Asynchronous Schema Change in F1	2013	VLDB	6.4910596e-05
4,520	Managing and Querying Transaction-time Databases under Schema Evolution	2008	VLDB	6.1170427e-05
5,354	Principles of Transaction-Based On-Line Reorganization	1992	VLDB	5.5518586e-05
7,142	Everything is a Transaction: Unifying Logical Concurrency Control and Physical Data Structure Maintenance in Database Management Systems	2021	CIDR	4.8197508e-05
7,886	BullFrog: Online Schema Evolution via Lazy Evaluation	2021	SIGMOD	4.6263924e-05
8,106	Resumable Online Index Rebuild in SQL Server	2017	VLDB	4.5847706e-05
8,806	Online Schema Evolution is (Almost) Free for Snapshot Databases	2023	VLDB	4.446517e-05

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1,782	Modular Synchronization in Multiversion Databases: Version Control and Concurrency Control	1989	SIGMOD	0.00010570176
8,806	Online Schema Evolution is (Almost) Free for Snapshot Databases	2023	VLDB	4.446517e-05
10,636	Concurrency Control as a Service	2025	VLDB	4.1945683e-05
1,385	SQLVM: Performance Isolation in Multi-Tenant Relational Database-as-a-Service	2013	CIDR	0.00012261812
8,192	Scalable and Robust Snapshot Isolation for High-Performance Storage Engines	2023	VLDB	4.562388e-05
4,858	Reducing Database Locking Contention Through Multi-version Concurrency	2014	VLDB	5.8732463e-05
419	Fast Serializable Multi-Version Concurrency Control for Main-Memory Database Systems	2015	SIGMOD	0.00023720338
3,374	Constant Time Recovery in Azure SQL Database	2019	VLDB	7.1635315e-05
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