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architecturenotes.co | ||
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johnjr.dev
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| | | | | When we study transactions in relational databases, one of the first things we learn are the guarantees that a transaction must provide. ACID(Atomicity, Consistency, Isolation, Durability) are the properties that we desire. Here, I will discuss the Isolation level in more detail and show that atomicity alone is not enough when handling concurrency. One classic example of the importance of atomicity is moving money between accounts. So, imagine that we have two accounts and we would like to transfer the total amount from one account to another one. In a relational database, what we need to do is three steps: | |
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planetscale.com
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| | | | | B-trees are used by many modern DBMSs. Learn how they work, how databases use them, and how your choice of primary key can affect index performance. | |
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www.ahmed-ibrahim.com
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| | | | | What is the Database transaction? A transaction is a single logical unit of work which accesses and possibly modifies the contents of a... | |
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curatedsql.com
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