Data Modeling & Indexing

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Native Support for Date-Only and Time-Only Field Types

### Summary MongoDB currently lacks native field types for **date-only** (e.g., `2025-05-28`) and **time-only** (e.g., `13:45:00`) values. This results in frequent developer confusion, incorrect behavior around time zones, wasted storage, and the...

Guest 3 months ago in Data Modeling & Indexing 0 Submitted

3 VOTE

Validation should support default values

Various users feel that validation should support default values. See, for instance: https://www.mongodb.com/community/forums/t/support-default-value-in-schema-validation/319684 https://www.mongodb.com/community/forums/t/setting-default-values-in-...

Guest 6 months ago in Data Modeling & Indexing 0 Submitted

3 VOTE

MongoDB should have a database backup system commit base for large self-management databases, like git commit.

There is already a mongodb backup tool mongodump but it is not a good solution for backing up large databases. We thought of making a CMS Platform with mongodb. Billions of websites can be created there. For such a large platform, the mongodump ba...

Guest 11 months ago in Data Modeling & Indexing 1 Submitted

1 VOTE

Support default values in validation

Many MongoDB users feel that default values should be supported in validation. See, for example: https://www.mongodb.com/community/forums/t/setting-default-values-in-data-schema/8411 https://www.mongodb.com/community/forums/t/support-default-value...

Guest 6 months ago in Data Modeling & Indexing 0 Submitted

8 VOTE

Rename an existing index

Allow for the possibility of renaming an existing index, without having to drop and recreate it. Let us say a unique index exists in production, it might not be possible to safely drop it. Yet the index name might not be ideal.

Guest about 4 years ago in Data Modeling & Indexing 1 Submitted

3 VOTE

TTL index throttling for deletion

To avoid deletion impact, we need to control the quantity and speed of document generations(insert). Need a way to throttle down the deletion quantity per a delete operation. i.e. # of documents per a ttl delete, sleep time between deletions(defa...

Guest almost 2 years ago in Data Modeling & Indexing 0 Submitted

4 VOTE

Extend schema validation to be able to enforce referential integrity between collections

Where a relational database uses 2 tables to store a 1:many "parent - child" relationship between entities, MongoDB mostly stores the child documents in an array file as part of the parent document. This automatically ensures referential integrity...

Guest over 2 years ago in Data Modeling & Indexing 0 Submitted

6 VOTE

Add expression indexes

An expression index is one where the value being indexed is the result of an expression, like lower casing a string. http://en.wikipedia.org/wiki/Expression_index http://www.postgresql.org/docs/8.1/static/indexes-expressional.html

Guest over 4 years ago in Data Modeling & Indexing 0 Submitted

4 VOTE

Support readOnly in Json Schema Validation

Support the readOnly property for json schema validation to make certain fields immutable (or the entire document) after creation.

Guest over 3 years ago in Data Modeling & Indexing 0 Submitted

1 VOTE

Multiple unique single indexes in sharded collections

MongoDB sharded collection can only have one unique index which is the shard key. However, in real applications, one might need more than one single unique index. "Proxy" collections suggested in https://www.mongodb.com/docs/manual/tutorial/unique...

Guest 11 months ago in Data Modeling & Indexing 1 Submitted

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