just some thoughts

database/migrations/CMakeLists.txt

@@ -1,5 +1,5 @@
 set(MIGRATIONS migrations)
-configure_file(m0.sql ${PICA_BIN_DIR}/${CMAKE_INSTALL_DATADIR}/${MIGRATIONS}/m0.sql COPYONLY)
+configure_file(m0.sql ${PROJECT_BINARY_DIR}/${CMAKE_INSTALL_DATADIR}/${MIGRATIONS}/m0.sql COPYONLY)
 
 install(
     FILES

database/migrations/m0.sql

@@ -1,6 +1,36 @@
+--creating system table
 CREATE TABLE IF NOT EXISTS system (
     `key` VARCHAR(32) PRIMARY KEY,
     `value` TEXT
 );
 
+--creating roles table
+CREATE TABLE IF NOT EXISTS roles (
+    `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    `name` VARCHAR(256) UNIQUE NOT NULL,
+    `color` INTEGER UNSIGNED DEFAULT 0
+);
+
+--creating accounts table
+CREATE TABLE IF NOT EXISTS accounts (
+    `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    `login` VARCHAR(256) UNIQUE NOT NULL,
+    `nick` VARCHAR(256),
+    `type` INTEGER UNSIGNED NOT NULL,
+    `password` VARCHAR(64),
+    `salt` VARCHAR(32),
+    `role` INTEGER UNSIGNED NOT NULL,
+    `created` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
+
+    FOREIGN KEY (role) REFERENCES roles(id)
+);
+
+--creating defailt roles
+INSERT IGNORE INTO roles (`name`)
+VALUES ('root');
+
+--inserting initial version
 INSERT INTO system (`key`, `value`) VALUES ('version', '0');
+
+--recording initial time
+INSERT INTO system (`key`, `value`) VALUES ('created', UTC_TIMESTAMP());