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Handling Graphs in SQL

Many practical database problems can be tackled more simply and intuitively by graphs or networks, which in this sense are graphs in which attributes can be associated with the nodes and edges. It is a natural way to study relationships within the data. SQL databases aren't the easiest way of doing it, but it makes sense where the scale permits it. Because of the range of graphs and techniques, some Graph theory is unavoidable before you get stuck into the code, and who better to introduce graph databases than Joe Celko?

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Question of the Day

Identities and Sequences V

When thinking about the identity property and sequence objects, which of these can generate values before an insert statement is executed?

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