Learn preventing overbooking through a last-seat race, an atomic update, update locks, and a database constraint that rejects oversold inventory.
SQL SERVER – Interesting Observation of DMV of Active Transactions and DMV of Current Transactions
sys.dm_tran_active_transactions and sys.dm_tran_current_transaction look alike, but one lists active transactions for the instance, the other only your session.
SQL SERVER – Transaction and Local Variables – Swap Variables – Update All At Once Concept
Two ideas with examples: transactions have no effect on local variables, and an UPDATE applies all its changes at once, which lets you Swap Variables in one go.
SQL SERVER – Detailed Explanation of Transaction Lock, Lock Type, Avoid Locks
How do you find which table has a transaction lock and what lock type it is? Imran Mohammed explains it for SQL Server 2000 and 2005, and how to avoid locks.
SQL SERVER – 2005 -Track Down Active Transactions Using T-SQL
Want to track down active transactions in your database? One simple DMV query on sys.dm_tran_session_transactions returns them in SQL Server 2005.
Reading SQL Server Error Messages Carefully
Reading SQL Server error messages carefully means using number, severity, state, and line to narrow the cause before searching.
ACID Properties Shown With Real Transactions
ACID properties shown With Real Transactions uses short SQL Server scripts to explain atomicity, consistency, isolation, and durability.