mirror of https://gitee.com/bigwinds/arangodb
updated documentation for valid keys
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@ -57,7 +57,7 @@
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/// required, provided that the values conform to the following restrictions:
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/// * the key must be at most 254 bytes long
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/// * it must consist of the letters a-z (lower or upper case), the digits 0-9,
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/// the underscore (_) or dash (-) characters only
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/// the underscore (_), dash (-), or colon (:) characters only
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/// * any other characters, especially multi-byte sequences, whitespace or
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/// punctuation characters cannot be used inside key values
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/// * the key must be unique within the collection it is used
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