first try

mariadb-init/01-init.sql

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+CREATE TABLE asset_type (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(100) NOT NULL UNIQUE
+);
+
+CREATE TABLE asset (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(255) NOT NULL,
+    asset_type_id INT NOT NULL,
+    FOREIGN KEY (asset_type_id) REFERENCES asset_type(id)
+);
+
+CREATE TABLE log_type (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(100) NOT NULL UNIQUE
+);
+
+CREATE TABLE log (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(255) NOT NULL,
+    log_type_id INT NOT NULL,
+    date DATE DEFAULT CURRENT_DATE,
+    FOREIGN KEY (log_type_id) REFERENCES log_type(id)
+);
+
+-- Junction table for equipment assets
+CREATE TABLE log_equipment_asset (
+    log_id INT NOT NULL,
+    asset_id INT NOT NULL,
+    PRIMARY KEY (log_id, asset_id),
+    FOREIGN KEY (log_id) REFERENCES log(id) ON DELETE CASCADE,
+    FOREIGN KEY (asset_id) REFERENCES asset(id) ON DELETE CASCADE
+);
+
+-- Junction table for substance assets
+CREATE TABLE log_substance_asset (
+    log_id INT NOT NULL,
+    asset_id INT NOT NULL,
+    PRIMARY KEY (log_id, asset_id),
+    FOREIGN KEY (log_id) REFERENCES log(id) ON DELETE CASCADE,
+    FOREIGN KEY (asset_id) REFERENCES asset(id) ON DELETE CASCADE
+);