WebHaving two types of entities, that are mapped to two Java classes in the single MongoDB collection: and two repositories for those entities: MongoRepositories don't handle the … WebJan 25, 2011 · MongoDB BSON documents are capped at 16 MB. So if the total size of your array of files is less than that, you may store them directly in your document using the BinData data type. Videos, images, PDFs, spreadsheets, etc. - it doesn't matter, they are all treated the same.

$type (aggregation) — MongoDB Manual

Webnamespace: name for a collection or index in MongoDB. The namespace is a combination of the database name and the name of the collection or index ( source) name-value pair: a common way of giving data meaning, whereby one half of the pair holds the data and the other half of the pair holds an attribute that describes the data. WebThe types specified in the array can be either numeric or string aliases. See Querying by Multiple Data Type for an example. Available Types describes the BSON types and … a level chem orbitals

Geospatial Queries — MongoDB Manual

WebJan 10, 2012 · 1 Answer Sorted by: 9 You specify the type on insert by the type of the value you're inserting. It's not like a RDMS where you have to specify the field type beforehand. For example: String: {"foo": "bar"} Number: {"price": 5.25} Hash: {"foo": {"bar": true}} Array of strings: {"pets": ["cat", "dog"]} WebThere are nearly a dozen types of database. Some of the more commonly used categories of database include: Hierarchical Databases Developed in the 1960s, the hierarchical … a level chem periodic table aqa