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Permit or forgive?
This post is about row update locking within a relational database instance. But before we delve into the nuances of locking, it is important to lay out the context of this discussion. We will be only...
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Up and out
Scaling out a database across a network of database servers requires an architecture which equitably distributes independent tasks across the network; where equitable distribution is required to ensure...
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A blunt tool
B-Trees are regularly used by relational databases to enforce primary key constraints. Let’s look at what we know about a primary key… It is unique The semantic ordering of a primary key is irrelevant...
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Gone in a flash
Flash storage has become mainstream. But is it here to stay? Probably not. There is a whole raft of non-volatile memory technologies snapping at the heels of flash memory. These new technologies use...
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Divide and ponder
Partitioning is an essential component to achieving scalability in a database server and there are several reasons for adopting partitioning. One reason is to overcome the performance shortcomings of...
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Cover up
A traditional relational database falls into one of two camps – it is either a row store or a column store. These are both intuitive arrangements for storing a table structure, where either each row or...
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Black and white
The constant background debate about relational versus NoSQL has become entrenched in dogma and misses many fundamental aspects of data management. Fortunately, the notion that the difference between...
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Memento
Event sourcing is a design pattern for retaining an exhaustive history of events such that the state of the system now (or at some point in the past) can be derived by a replay of those events. The...
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Big is in the Eye of the Beholder
One of the really hot topics for 2012 is Big Data and every vendor seems keen to ride the Big Data wave. But what is big? According to Wikipedia, “Big data is a term applied to data sets whose size is...
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JustOneDB launched on Engine Yard
JustOne Database Inc is pleased to announce that JustOneDB is now available on Engine Yard as an Add-on service. JustOneDB is an excellent relational database for enterprise level customers in the...
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