JavaScript Example:

use studentsDB
db.students.insertMany([
  { name: "Alice", age: 20, department: "Computer Science", marks: 85 },
  { name: "Bob", age: 21, department: "Mathematics", marks: 78 },
  { name: "Charlie", age: 19, department: "Physics", marks: 92 },
])
db.students.insertOne({ name: "Frank", age: 23, department: "Physics", marks: 80 })
db.students.find()
db.students.updateOne(
  { name: "Alice" },
  { $set: { marks: 90 } }
db.students.deleteOne({ name: "Frank" })
db.students.createIndex({ department: 1 })
db.students.getIndexes()
sh.enableSharding("studentsDB")
sh.shardCollection("studentsDB.students", { department: 1 })