Node.js · Theory

Create Database

Theory

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Create Database

Create Database sits in a first job task. Neha’s job is a Create Database dry-run. Write that first.

Create Database on the board: one Create Database step Neha can write from memory. Then say what a Create Database dry-run looks like after.

Create Database exists so Neha can keep a Create Database dry-run correct in a first job task.

Create Database shows up in a first job task. Name a Create Database dry-run, not “a real-world scenario”.

Don’t do this with Create Database — only reciting the name of Create Database. Interviewers spot it in ten seconds.

After Create Database, Neha should still remember only reciting the name of Create Database.

Close Create Database with: “If I skip it, a Create Database dry-run goes wrong like this: only reciting the name of Create Database.”

Exam tip

Say Create Database in one breath, then one Create Database step Neha can write from memory, then only reciting the name of Create Database.

Example

// Create Database
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

Create Database: find user 2, then list names. Say both prints.

Short notes

DefCreate Database — Neha uses it for a Create Database dry-run in a first job task.
RuleCreate Database → one Create Database step Neha can write from memory.
RememberCreate Database + npm (a first job task).
UseCreate Database in a first job task (a Create Database dry-run).
TrapCreate Database — only reciting the name of Create Database.
ExCreate Database → a Create Database dry-run.

// Create Database const users = [ { id: 1, name: "Asha" }, { id: 2, name: "Ravi" }, ]; function findUser(id) { return users.find((u) => u.id === id) ?? null; } console.log(findUser(2)); console.log(users.map((u) => u.name));

Create Database

Example

Short notes

Questions

Create Database

Example

Short notes

Questions