Masters and Transaction changes

database/migrations/2025_03_21_090348_create_items_table.php

@@ -0,0 +1,47 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        $sql = <<<'SQL'
+            CREATE TABLE items (
+                id              BIGINT GENERATED always AS IDENTITY PRIMARY KEY,
+
+                line_id			BIGINT NOT NULL,
+                block_id		BIGINT NOT NULL,
+                plant_id		BIGINT NOT NULL,
+
+                code            CITEXT NOT NULL CHECK (LENGTH(code) >= 6),
+                description     CITEXT NOT NULL,
+
+                hourly_quantity INT NOT NULL CHECK (hourly_quantity > 0),
+
+                created_at      TIMESTAMP NOT NULL DEFAULT NOW(),
+                updated_at      TIMESTAMP NOT NULL DEFAULT NOW(),
+                deleted_at      TIMESTAMP,
+
+                UNIQUE (code, line_id, block_id, plant_id),
+                FOREIGN KEY (line_id) REFERENCES lines (id),
+                FOREIGN KEY (block_id) REFERENCES blocks (id),
+                FOREIGN KEY (plant_id) REFERENCES plants (id)
+            );
+        SQL;
+
+        DB::statement($sql);
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('items');
+    }
+};