MongoDB Collection Operations: Creation, Deletion, and Data Insertion

MongoDB collections are analogous to tables in relational databases, storing flexible documents (structured like JSON) where different documents can have distinct fields, with no fixed schema. There are two methods to create a collection: explicitly using `db.createCollection(collectionName)` (supporting attributes like `capped` for fixed size) or implicitly when data is first inserted. To delete a collection, use `db.collectionName.drop()`, which returns `true` on success. Deleted data is permanently lost, so caution is advised. Data insertion is done via `insertOne()` (single document) and `insertMany()` (multiple documents). Documents are key-value pairs, with a unique `_id` automatically generated (customizable but default is recommended). **Notes**: Collection names are case-sensitive and must not contain special characters beyond valid symbols; data types must follow standards (e.g., use `new Date()` for dates); deletions are irreversible, so backup before operations is strongly recommended. (Word count: 198)