Shulou(Shulou.com)05/31 Report--

What are the specifications for the establishment of MongoDB database? in view of this problem, this article introduces the corresponding analysis and solutions in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

one。 Database naming considerations:

1)。 Cannot be an empty string, such as ""

2)。 Cannot contain "" (space),., $, /,\,\ 0 (empty character)

3)。 Case sensitive

4)。 Database name up to 64 bits

5)。 You cannot use a reserved database name, such as admin,local,config

two。 Collection name definition specification

1)。 Cannot be an empty string, such as ""

2)。 Cannot contain $,\ 0 (empty character)

3)。 You can't use "system." The beginning

4)。 Use "." To organize subcollections, such as book,itpub

three。 Specification for definition of document keys

1)。 Cannot contain\ 0 character (null character) because this character represents the end of the key

2)。 Cannot contain "$" and "." because "." And "$" are reserved and can only be used in specific environments

3)。 Type-sensitive (such as strings and integers, etc.), as well as case-sensitive

4)。 Keys cannot be repeated and play a unique role in a document.

Note: all the above specifications must conform to the UTF-8 standard string

The answers to the questions about the MongoDB database establishment specification are shared here. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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