| User-defined Apply |
| Consumption |
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| Ÿ | User-written
custom apply functions |
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| Ÿ | Written in
PL/SQL, Java, C, C++ |
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| Ÿ | Uses: |
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| – | custom
transformations |
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| – | column
subsetting |
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| – | normalizing or
denormalizing data |
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| – | populating
related fields or tables |
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