1. Database stats
db.stats() reports the current database's storage size, object count, and index totals.
db.stats()Typorithm · medium
Database Admin
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Full lesson · 8 learning steps Open any exercise for focused practice
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Step 1 of 8 · intro card
Learn Database Admin
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Inspect and manage a database: db.stats() for size, createCollection to add one, drop() to remove a collection, dropDatabase() to remove all.
db.stats() summarises the current database — document counts, data size, and index footprint at a glance.
createCollection adds a collection explicitly so you can set options like validators or capped size up front.
drop() removes a single collection while dropDatabase() wipes the entire current database, so both are irreversible.
01
db.stats() reports size and counts.
02
db.createCollection() adds a collection.
03
drop() / dropDatabase() delete data permanently.
db.stats()
db.createCollection("orders")
db.orders.drop()
db.dropDatabase()Read the implementation
Connect each part of the code to the concept before you type.
2. Create collection
createCollection makes a collection explicitly, useful to set options before any insert.
db.createCollection("orders")3. Drop collection
drop() deletes a single collection and all of its documents and indexes.
db.orders.drop()4. Drop database
dropDatabase() removes the entire current database, every collection included.
db.dropDatabase()A complete learning loop
01
Understand
Read the concept map and follow the code breakdown.
02
Reconstruct
Type the implementation, repair mistakes and work through every recall exercise.
03
Verify
Use the final check without hints; revisit weak concepts in short practice sessions.