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Specifically it's operations on sets. Trying to manipulate, in your head, many sets of information - with aggregation and outer joins - to yield a solution set
by bpyne 18y ago
Specifically it's operations on sets. Trying to manipulate, in your head, many sets of information - with aggregation and outer joins - to yield a solution set is highly mathematical.
- plinkplonk 18y ago"Specifically it's operations on sets" more specifically on relations, though most database schema in the wild are not really relational. I've personally found knowing relational algebra a great help in designing db s, formulating queries and so on.