MongoDB Associate Developer (Python)

Vad provet tar upp

1. Område 1: MongoDB Overview and the Document Model

   8 %

   Databases, collections and documents; BSON value types (ObjectId, Date, Decimal128, arrays, embedded documents); flexible schemas: documents of different shapes in one collection; the _id field.

   Öva område 1 →

2. Område 2: CRUD

   51 %

   Inserts, replacement and $set updates, upserts, updateMany, findOneAndUpdate, deletes; equality, array, comparison, $in, $elemMatch and logical queries; sort, limit, projection, cursors, counting; Atlas Search; aggregation with $match, $group, $lookup, $out.

   Öva område 2 →

3. Område 3: Indexes

   17 %

   Single-field, compound, multikey and unique indexes; the ESR guideline for equality, sort and range; indexes that support sorts; counting a collection's indexes; write and storage trade-offs; reading explain output (COLLSCAN versus IXSCAN, keys and documents examined).

   Öva område 3 →

4. Område 4: Data Modeling

   4 %

   Embedding versus referencing for one-to-one, one-to-many and many-to-many relationships; data that is accessed together is stored together; schema design patterns.

   Öva område 4 →

5. Område 5: Tools and Tooling

   2 %

   mongosh, MongoDB Compass, Atlas Data Explorer and the database tools (mongodump, mongorestore, mongoimport, mongoexport).

   Öva område 5 →

6. Område 6: Drivers

   18 %

   PyMongo: MongoClient and connection strings, reusing one client, databases and collections, inserting, finding and updating from Python, cursors, BSON types from Python (ObjectId, datetime), aggregation pipelines, error handling and transactions with sessions.

   Öva område 6 →

Områdenas namn och vikter kommer från den officiella MDB-DEV-PY provmål (kontrollerad 2026-10-28). Kontrollera alltid den för det auktoritativa innehållet.

Innehåller 55 praktiska uppgifter (ordna, matcha, läs ett underlag) – öva på dem med filtret ”Ordna/matcha”.