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Data Structures & AlgorithmsComplexity analysis up to graphs and DP.Operating SystemsProcesses, scheduling, memory and concurrency.Database Management SystemsRelational modelling, transactions and indexing.Computer NetworksFrom wires and radio waves up to the web.

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Database Management Systems

Foundations of DBMS6

Relational Model, Algebra & Calculus6

Integrity Constraints & Normal Forms6

File Organization & Indexing7

Transactions & Concurrency Control9

Query Processing, Optimization & Distributed DBs5

Query processing and join algorithms
Query optimization and execution plans
Distributed databases: fragmentation and replication
Two-phase commit and distributed transactions
The CAP theorem and distributed consistency trade-offs

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Database Management Systems

Foundations of DBMS6

Relational Model, Algebra & Calculus6

Integrity Constraints & Normal Forms6

File Organization & Indexing7

Transactions & Concurrency Control9

Query Processing, Optimization & Distributed DBs5

Query processing and join algorithms
Query optimization and execution plans
Distributed databases: fragmentation and replication
Two-phase commit and distributed transactions
The CAP theorem and distributed consistency trade-offs

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Two-phase commit and distributed transactions

How atomicity is preserved for a transaction spanning multiple machines, the two-phase commit protocol in detail, and its blocking-failure weakness.

8 min readUpdated 2026-09-04dbmstwo-phase-commitdistributed-transactions