From df4c90abb32ff11fc1b85ab090d4f4e111533a04 Mon Sep 17 00:00:00 2001
From: Salem Ba-rabuod <barboud@gmail.com>
Date: Wed, 1 Apr 2026 21:15:51 +0200
Subject: [PATCH] solved the assignment

---
 .vscode/settings.json     |   6 +-
 task-1/books_library.db   | Bin 24576 -> 24576 bytes
 task-1/queries.sql        |  33 +++
 task-2/app.js             |  24 +-
 task-2/data/flashcards.db | Bin 0 -> 12288 bytes
 task-2/migrate.js         |  33 +++
 task-2/package-lock.json  | 467 ++++++++++++++++++++++++++++++++++++++
 task-2/setup.sql          |  18 ++
 task-2/src/database.js    |  69 ++++--
 9 files changed, 618 insertions(+), 32 deletions(-)
 create mode 100644 task-2/data/flashcards.db
 create mode 100644 task-2/migrate.js
 create mode 100644 task-2/package-lock.json
 create mode 100644 task-2/setup.sql

diff --git a/.vscode/settings.json b/.vscode/settings.json
index 0c13e99..8b97c5c 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,6 +1,10 @@
 {
   "editor.inlineSuggest.enabled": false,
   "github.copilot.enable": {
-    "javascript": false
+    "*": true,
+    "plaintext": false,
+    "markdown": false,
+    "scminput": false,
+    "javascript": true
   }
 }
diff --git a/task-1/books_library.db b/task-1/books_library.db
index 88b0418c6cf5291e897c14742bfcd1b1868c352a..1d976b9402326f15a4c9dfb9472d152f6e2e7052 100644
GIT binary patch
delta 269
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delta 127
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diff --git a/task-1/queries.sql b/task-1/queries.sql
index fecf7ad..57ba531 100644
--- a/task-1/queries.sql
+++ b/task-1/queries.sql
@@ -1,20 +1,53 @@
 ---- Queries
 
 -- **Question 1** — List the title and published year of every book in the `'Science Fiction'` genre, ordered by published year (oldest first).
+SELECT title,published_year FROM books
+WHERE genre = 'Science Fiction'
+ORDER BY published_year ASC;
+
 
 -- **Question 2** — Show every book published before 1950. Display the title and year only.
+SELECT title,published_year FROM books
+WHERE published_year < 1950;
+
+
 
 -- **Question 3** — Show every book in the database along with its author's full name. Combine `first_name` and `last_name` into a single column called `author`. _(Hint: you will need a JOIN.)_
+SELECT
+    b.title,
+    a.first_name || ' ' || a.last_name AS author
+FROM books b
+INNER JOIN authors a ON a.id = b.author_id;
+
 
 -- **Question 4** — List all books written by Stephen King. Show the title and published year, ordered by year. _(Hint: JOIN the two tables and filter on the author's name.)_
+SELECT
+    b.title,
+    b.published_year,
+    a.first_name || ' ' || a.last_name AS author
+FROM books b
+INNER JOIN authors a ON a.id = b.author_id
+WHERE a.first_name || ' ' || a.last_name = 'Stephen King'
+ORDER BY published_year;
+
+
 
 -- **Question 5** — Add yourself as a new author. Use your real name, or make one up. Pick any nationality and birth year.
+INSERT INTO authors (first_name, last_name, nationality, birth_year)
+VALUES ('Salem', 'Ba-Rabuod', 'Yemeni', 1990);
 
 -- **Question 6** — Add one book for the author you just inserted. It can be a real book or a made-up one.
+INSERT INTO books (title, published_year, genre, author_id)
+VALUES ('The Journey of Salem', 2026, 'Biography', 26);
 
 -- **Question 7** — The genre for "The Dark Tower: The Gunslinger" was entered incorrectly as `'Fantasy'`. It should be `'Horror'`. Write an UPDATE to fix it, then verify the change with a SELECT.
+UPDATE books
+SET genre = 'Horror'
+WHERE title = 'The Dark Tower: The Gunslinger';
+
 
 -- **Question 8** — Delete the book you added in Question 6. Make sure your query targets only that specific row.
+Delete from books where title = 'The Journey of Salem' AND author_id = 26;
 
 ---
 
diff --git a/task-2/app.js b/task-2/app.js
index 0c4e472..10784ec 100644
--- a/task-2/app.js
+++ b/task-2/app.js
@@ -12,19 +12,19 @@ import {
   markCardLearned,
   deleteCard,
   deleteDeck,
-} from "./src/database.js";
+} from './src/database.js';
 
-console.log("=== Flashcard App ===\n");
+console.log('=== Flashcard App ===\n');
 
 // 1. List all decks
-console.log("All decks:");
+console.log('All decks:');
 const decks = getAllDecks();
 decks.forEach((deck) => {
   console.log(`  [${deck.id}] ${deck.name} — ${deck.description}`);
 });
 
 // 2. Get a single deck by id
-console.log("\nLooking up deck 2:");
+console.log('\nLooking up deck 2:');
 const deck2 = getDeckById(2);
 console.log(`  Found: ${deck2.name}`);
 
@@ -32,26 +32,26 @@ console.log(`  Found: ${deck2.name}`);
 console.log('\nCards in "JavaScript Basics" (deck 1):');
 const cards = getAllCardsForDeck(1);
 cards.forEach((card) => {
-  const status = card.learned ? "✓ learned" : "○ not yet";
+  const status = card.learned ? '✓ learned' : '○ not yet';
   console.log(`  [${card.id}] ${status}  Q: ${card.question}`);
 });
 
 // 4. Add a new deck
-console.log("\nAdding a new deck...");
-const newDeck = addDeck("Git & GitHub", "Version control basics");
+console.log('\nAdding a new deck...');
+const newDeck = addDeck('Git & GitHub', 'Version control basics');
 console.log(`  Created: [${newDeck.id}] ${newDeck.name}`);
 
 // 5. Add a card to the new deck
-console.log("\nAdding a card to the new deck...");
+console.log('\nAdding a card to the new deck...');
 const newCard = addCard(
-  "What is a commit?",
-  "A snapshot of your changes saved to the repository",
+  'What is a commit?',
+  'A snapshot of your changes saved to the repository',
   newDeck.id,
 );
 console.log(`  Created card [${newCard.id}]: "${newCard.question}"`);
 
 // 6. Mark a card as learned
-console.log("\nMarking card 1 as learned...");
+console.log('\nMarking card 1 as learned...');
 const updated = markCardLearned(1);
 console.log(`  Card 1 learned status is now: ${updated.learned}`);
 
@@ -65,4 +65,4 @@ console.log(`\nDeleting deck ${newDeck.id}...`);
 const deckDeleted = deleteDeck(newDeck.id);
 console.log(`  Deleted: ${deckDeleted}`);
 
-console.log("\n=== Done ===");
+console.log('\n=== Done ===');
diff --git a/task-2/data/flashcards.db b/task-2/data/flashcards.db
new file mode 100644
index 0000000000000000000000000000000000000000..42476fd22e5016801ec3bd2a90e7251f67e5d631
GIT binary patch
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diff --git a/task-2/migrate.js b/task-2/migrate.js
new file mode 100644
index 0000000..eb4e79d
--- /dev/null
+++ b/task-2/migrate.js
@@ -0,0 +1,33 @@
+import fs from 'node:fs';
+import Database from 'better-sqlite3';
+
+const data = fs.readFileSync('data/data.json', 'utf-8');
+const content = JSON.parse(data);
+
+const dataMigrate = new Database('data/flashcards.db');
+
+const insertDecks = dataMigrate.prepare(`
+  INSERT INTO decks (name, description)
+  VALUES (@name, @description)
+`);
+
+for (const deck of content.decks) {
+  insertDecks.run({
+    name: deck.name,
+    description: deck.description,
+  });
+}
+
+const insertCards = dataMigrate.prepare(`
+  INSERT INTO cards (question, answer, learned, deck_id)
+  VALUES (@question, @answer, @learned, @deck_id)
+`);
+
+for (const card of content.cards) {
+  insertCards.run({
+    question: card.question,
+    answer: card.answer,
+    learned: card.learned ? 1 : 0,
+    deck_id: card.deckId,
+  });
+}
diff --git a/task-2/package-lock.json b/task-2/package-lock.json
new file mode 100644
index 0000000..72fc35b
--- /dev/null
+++ b/task-2/package-lock.json
@@ -0,0 +1,467 @@
+{
+  "name": "flashcard-app",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "flashcard-app",
+      "version": "1.0.0",
+      "dependencies": {
+        "better-sqlite3": "^12.8.0"
+      }
+    },
+    "node_modules/base64-js": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
+      "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT"
+    },
+    "node_modules/better-sqlite3": {
+      "version": "12.8.0",
+      "resolved": "https://registry.npmjs.org/better-sqlite3/-/better-sqlite3-12.8.0.tgz",
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+      "hasInstallScript": true,
+      "license": "MIT",
+      "dependencies": {
+        "bindings": "^1.5.0",
+        "prebuild-install": "^7.1.1"
+      },
+      "engines": {
+        "node": "20.x || 22.x || 23.x || 24.x || 25.x"
+      }
+    },
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+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
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+      }
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+      "license": "MIT",
+      "dependencies": {
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+        "inherits": "^2.0.4",
+        "readable-stream": "^3.4.0"
+      }
+    },
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+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
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+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "base64-js": "^1.3.1",
+        "ieee754": "^1.1.13"
+      }
+    },
+    "node_modules/chownr": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.4.tgz",
+      "integrity": "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==",
+      "license": "ISC"
+    },
+    "node_modules/decompress-response": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-6.0.0.tgz",
+      "integrity": "sha512-aW35yZM6Bb/4oJlZncMH2LCoZtJXTRxES17vE3hoRiowU2kWHaJKFkSBDnDR+cm9J+9QhXmREyIfv0pji9ejCQ==",
+      "license": "MIT",
+      "dependencies": {
+        "mimic-response": "^3.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
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+      "license": "MIT",
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/detect-libc": {
+      "version": "2.1.2",
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+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/end-of-stream": {
+      "version": "1.4.5",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.5.tgz",
+      "integrity": "sha512-ooEGc6HP26xXq/N+GCGOT0JKCLDGrq2bQUZrQ7gyrJiZANJ/8YDTxTpQBXGMn+WbIQXNVpyWymm7KYVICQnyOg==",
+      "license": "MIT",
+      "dependencies": {
+        "once": "^1.4.0"
+      }
+    },
+    "node_modules/expand-template": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/expand-template/-/expand-template-2.0.3.tgz",
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+      "license": "(MIT OR WTFPL)",
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/file-uri-to-path": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
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+      "license": "MIT"
+    },
+    "node_modules/fs-constants": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs-constants/-/fs-constants-1.0.0.tgz",
+      "integrity": "sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow==",
+      "license": "MIT"
+    },
+    "node_modules/github-from-package": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/github-from-package/-/github-from-package-0.0.0.tgz",
+      "integrity": "sha512-SyHy3T1v2NUXn29OsWdxmK6RwHD+vkj3v8en8AOBZ1wBQ/hCAQ5bAQTD02kW4W9tUp/3Qh6J8r9EvntiyCmOOw==",
+      "license": "MIT"
+    },
+    "node_modules/ieee754": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz",
+      "integrity": "sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "BSD-3-Clause"
+    },
+    "node_modules/inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+      "license": "ISC"
+    },
+    "node_modules/ini": {
+      "version": "1.3.8",
+      "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.8.tgz",
+      "integrity": "sha512-JV/yugV2uzW5iMRSiZAyDtQd+nxtUnjeLt0acNdw98kKLrvuRVyB80tsREOE7yvGVgalhZ6RNXCmEHkUKBKxew==",
+      "license": "ISC"
+    },
+    "node_modules/mimic-response": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/mimic-response/-/mimic-response-3.1.0.tgz",
+      "integrity": "sha512-z0yWI+4FDrrweS8Zmt4Ej5HdJmky15+L2e6Wgn3+iK5fWzb6T3fhNFq2+MeTRb064c6Wr4N/wv0DzQTjNzHNGQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/minimist": {
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+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
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+    "node_modules/mkdirp-classic": {
+      "version": "0.5.3",
+      "resolved": "https://registry.npmjs.org/mkdirp-classic/-/mkdirp-classic-0.5.3.tgz",
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+      "license": "MIT"
+    },
+    "node_modules/napi-build-utils": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/napi-build-utils/-/napi-build-utils-2.0.0.tgz",
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+      "license": "MIT"
+    },
+    "node_modules/node-abi": {
+      "version": "3.89.0",
+      "resolved": "https://registry.npmjs.org/node-abi/-/node-abi-3.89.0.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "semver": "^7.3.5"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha512-lNaJgI+2Q5URQBkccEKHTQOPaXdUxnZZElQTZY0MFUAuaEqe1E+Nyvgdz/aIyNi6Z9MzO5dv1H8n58/GELp3+w==",
+      "license": "ISC",
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
+    "node_modules/prebuild-install": {
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/prebuild-install/-/prebuild-install-7.1.3.tgz",
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+      "deprecated": "No longer maintained. Please contact the author of the relevant native addon; alternatives are available.",
+      "license": "MIT",
+      "dependencies": {
+        "detect-libc": "^2.0.0",
+        "expand-template": "^2.0.3",
+        "github-from-package": "0.0.0",
+        "minimist": "^1.2.3",
+        "mkdirp-classic": "^0.5.3",
+        "napi-build-utils": "^2.0.0",
+        "node-abi": "^3.3.0",
+        "pump": "^3.0.0",
+        "rc": "^1.2.7",
+        "simple-get": "^4.0.0",
+        "tar-fs": "^2.0.0",
+        "tunnel-agent": "^0.6.0"
+      },
+      "bin": {
+        "prebuild-install": "bin.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
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+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/pump/-/pump-3.0.4.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "end-of-stream": "^1.1.0",
+        "once": "^1.3.1"
+      }
+    },
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+      "resolved": "https://registry.npmjs.org/rc/-/rc-1.2.8.tgz",
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+      "license": "(BSD-2-Clause OR MIT OR Apache-2.0)",
+      "dependencies": {
+        "deep-extend": "^0.6.0",
+        "ini": "~1.3.0",
+        "minimist": "^1.2.0",
+        "strip-json-comments": "~2.0.1"
+      },
+      "bin": {
+        "rc": "cli.js"
+      }
+    },
+    "node_modules/readable-stream": {
+      "version": "3.6.2",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.2.tgz",
+      "integrity": "sha512-9u/sniCrY3D5WdsERHzHE4G2YCXqoG5FTHUiCC4SIbr6XcLZBY05ya9EKjYek9O5xOAwjGq+1JdGBAS7Q9ScoA==",
+      "license": "MIT",
+      "dependencies": {
+        "inherits": "^2.0.3",
+        "string_decoder": "^1.1.1",
+        "util-deprecate": "^1.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/safe-buffer": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+      "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT"
+    },
+    "node_modules/semver": {
+      "version": "7.7.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
+      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/simple-concat": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/simple-concat/-/simple-concat-1.0.1.tgz",
+      "integrity": "sha512-cSFtAPtRhljv69IK0hTVZQ+OfE9nePi/rtJmw5UjHeVyVroEqJXP1sFztKUy1qU+xvz3u/sfYJLa947b7nAN2Q==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT"
+    },
+    "node_modules/simple-get": {
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+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "decompress-response": "^6.0.0",
+        "once": "^1.3.1",
+        "simple-concat": "^1.0.0"
+      }
+    },
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+      "license": "MIT",
+      "dependencies": {
+        "safe-buffer": "~5.2.0"
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+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
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+      "version": "2.1.4",
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+      "license": "MIT",
+      "dependencies": {
+        "chownr": "^1.1.1",
+        "mkdirp-classic": "^0.5.2",
+        "pump": "^3.0.0",
+        "tar-stream": "^2.1.4"
+      }
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+      "license": "MIT",
+      "dependencies": {
+        "bl": "^4.0.3",
+        "end-of-stream": "^1.4.1",
+        "fs-constants": "^1.0.0",
+        "inherits": "^2.0.3",
+        "readable-stream": "^3.1.1"
+      },
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha512-McnNiV1l8RYeY8tBgEpuodCC1mLUdbSN+CYBL7kJsJNInOP8UjDDEwdk6Mw60vdLLrr5NHKZhMAOSrR2NZuQ+w==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "safe-buffer": "^5.0.1"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==",
+      "license": "MIT"
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "license": "ISC"
+    }
+  }
+}
diff --git a/task-2/setup.sql b/task-2/setup.sql
new file mode 100644
index 0000000..c6be665
--- /dev/null
+++ b/task-2/setup.sql
@@ -0,0 +1,18 @@
+
+CREATE TABLE decks (
+    id INTEGER PRIMARY KEY,
+    name TEXT NOT NULL,
+    description TEXT 
+);
+
+CREATE TABLE cards (
+    id INTEGER PRIMARY KEY,
+    question TEXT NOT NULL,
+    answer TEXT NOT NULL,
+    learned INTEGER NOT NULL DEFAULT 0,
+
+    
+    deck_id INTEGER NOT NULL,
+    FOREIGN KEY (deck_id) REFERENCES decks(id)
+);
+
diff --git a/task-2/src/database.js b/task-2/src/database.js
index a737fcb..8219f0b 100644
--- a/task-2/src/database.js
+++ b/task-2/src/database.js
@@ -20,24 +20,36 @@ const db = new Database(DB_FILE);
 // ----------------------------------------------------------------
 
 export function getAllDecks() {
-  // TODO: return all rows from the decks table
-  throw new Error('Not implemented');
+  const decks = db.prepare('SELECT * FROM decks').all();
+  return decks;
 }
 
 export function getDeckById(id) {
-  // TODO: return the deck row with the given id, or null if not found
-  throw new Error('Not implemented');
+  const query = db.prepare('SELECT * FROM decks WHERE id = ?');
+  const deck = query.get(id);
+  return deck;
 }
 
 export function addDeck(name, description) {
-  // TODO: insert a new deck and return the new row (including its id)
-  throw new Error('Not implemented');
+  const insertDecks = db.prepare(`
+  INSERT INTO decks (name, description)
+  VALUES (@name, @description)
+`);
+  const info = insertDecks.run({
+    name: name,
+    description: description,
+  });
+
+  return {
+    id: info.lastInsertRowid,
+    name: name,
+    description: description,
+  };
 }
 
 export function deleteDeck(deckId) {
-  // TODO: delete the deck with the given id
-  //       return true if a row was deleted, false otherwise
-  throw new Error('Not implemented');
+  const info = db.prepare('DELETE FROM decks WHERE id = ?').run(deckId);
+  return info.changes > 0;
 }
 
 // ----------------------------------------------------------------
@@ -45,23 +57,42 @@ export function deleteDeck(deckId) {
 // ----------------------------------------------------------------
 
 export function getAllCardsForDeck(deckId) {
-  // TODO: return all card rows whose deckId matches
-  throw new Error('Not implemented');
+  const query = db.prepare(
+    `SELECT id, question, answer, learned, deck_id AS deckId FROM cards WHERE deck_id = ?`,
+  );
+  const cards = query.all(deckId);
+  return cards;
 }
 
 export function addCard(question, answer, deckId) {
-  // TODO: insert a new card and return the new row (including its id)
-  throw new Error('Not implemented');
+  const insertCards = db.prepare(`
+  INSERT INTO cards (question, answer, deck_id)
+  VALUES (@question, @answer,  @deckId)`);
+
+  const info = insertCards.run({
+    question: question,
+    answer: answer,
+    deckId: deckId,
+  });
+
+  return {
+    id: info.lastInsertRowid,
+    question: question,
+    answer: answer,
+    deckId: deckId,
+  };
 }
 
 export function markCardLearned(cardId) {
-  // TODO: set learned = 1 for the card with the given id
-  //       return the updated row, or null if not found
-  throw new Error('Not implemented');
+  db.prepare('UPDATE cards SET learned = 1 WHERE id = ?').run(cardId);
+  const card = db.prepare('SELECT * FROM cards WHERE id = ?').get(cardId);
+  if (!card) return null;
+  card.learned = true;
+  return card;
 }
 
 export function deleteCard(cardId) {
-  // TODO: delete the card with the given id
-  //       return true if a row was deleted, false otherwise
-  throw new Error('Not implemented');
+  const deleteCard = db.prepare('DELETE FROM cards WHERE id = ?');
+  const info = deleteCard.run(cardId);
+  return info.changes > 0;
 }