Pados cara CRUD operations damel ing MongoDB?

Question

Accepted Answer

**CRUD** (Create, Read, Update, Delete) operations ing MongoDB nggunakake method-method ing koleksyon. Kerja karo dokumen lan nggunakake syntax query sing lancar, mirip JSON — beda karo SQL nanging konsep-e padha.

## Create — masukake dokumen

```js
db.users.insertOne({ name: "Ann", age: 30 });          // insert one document
db.users.insertMany([                                   // insert multiple
  { name: "Bob", age: 25 },
  { name: "Carol", age: 28 }
]);
// each gets an auto-generated _id if not provided
```

## Read — takon dokumen

```js
db.users.find();                              // all documents
db.users.find({ age: 30 });                   // WHERE age = 30 (a query filter object)
db.users.find({ age: { $gt: 25 } });          // age > 25 ($gt operator)
db.users.findOne({ name: "Ann" });            // the first match
db.users.find({ active: true }, { name: 1 }); // projection — return only the name field
```

Takon nggunakake **filter document** (`{ field: value }`) sing njlentrehake apa sing cocok, karo operator (`$gt`, `$lt`, `$in`, etc.) kanggo kondisi. Projection (`{ name: 1 }`) milih field mana sing bakal dibali.

## Update — ngganti dokumen

```js
// updateOne/updateMany with UPDATE OPERATORS ($set, $inc, etc.)
db.users.updateOne(
  { name: "Ann" },                  // filter — which document
  { $set: { age: 31 } }              // update — $set changes a field
);
db.users.updateMany(
  { active: false },
  { $set: { status: "inactive" } }   // update all matching
);
db.users.updateOne({ name: "Ann" }, { $inc: { loginCount: 1 } });  // increment
```

Update njupuk **filter** (dokumen mana) lan **update document** nggunakake **operator** kayata `$set` (setela field), `$inc` (nambah), `$push` (tambahe ing array) — sampeyan ora ngganti kabeh dokumen (mung yen dimaksud).

## Delete — hilangake dokumen

```js
db.users.deleteOne({ name: "Ann" });          // delete the first match
db.users.deleteMany({ active: false });        // delete all matching
```

## Kenapa penting

Operasi CRUD minangka fondasi damel karo database apa wae, mula ngerti carane damel ing MongoDB minangka pengetahuan penting saben dina.

Operasi-operasi — **masukake** dokumen (`insertOne`/`insertMany`), **takon** nggunakake filter document lan operator (`find`/`findOne` karo `{ field: value }` filter, operator perbandingan kayata `$gt`, lan projection kanggo pilih field), **ngganti** karo filter lan update operator (`updateOne`/`updateMany` karo `$set`, `$inc`, etc.), lan **hilangake** (`deleteOne`/`deleteMany`) — minangka cara aplikasi nggawe, maca, ngganti, lan ngilangi data ing MongoDB, kuwi inti saka interaksi database paling akeh.
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