diff --git a/testdb.sql b/testdb.sql
new file mode 100644
index 0000000..7bb96b6
--- /dev/null
+++ b/testdb.sql
@@ -0,0 +1,123 @@
+CREATE TYPE sex AS ENUM ('m', 'f'); 
+
+CREATE TABLE table_persons (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    first_name TEXT NOT NULL CHECK ( first_name <> '' ),
+    last_name TEXT NOT NULL CHECK ( last_name <> '' ),
+    patronymic TEXT NULL,
+    sex sex
+);
+
+CREATE TABLE table_discounts (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    is_discount BOOLEAN DEFAULT FALSE,
+    discount_name TEXT NULL,
+    discount INT NULL
+);
+
+CREATE TABLE table_positions (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    position TEXT NOT NULL CHECK ( position <> '' )
+);
+
+CREATE TABLE table_phones (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    person_id INT NOT NULL,
+    phone TEXT NOT NULL,
+
+    FOREIGN KEY (person_id) REFERENCES table_persons (id)
+);
+
+CREATE TABLE table_emails (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    person_id INT NOT NULL,
+    email TEXT NOT NULL,
+
+    FOREIGN KEY (person_id) REFERENCES table_persons (id)
+);
+
+CREATE TABLE table_product_types (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    product_type TEXT NOT NULL CHECK ( type <> '' ),
+    product_descriptions TEXT NULL
+);
+
+CREATE TABLE table_manufacturers (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    manufacturer TEXT   NOT NULL CHECK ( manufacturer <> '' ),
+    manufactur_address      TEXT   NOT NULL CHECK ( address <> '' ),
+    telephone    TEXT   NOT NULL,
+    email        TEXT   NOT NULL
+);
+
+CREATE TABLE table_metrics (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    metric_name TEXT NOT NULL CHECK ( metric_name <> '' )
+);
+
+CREATE TABLE table_products (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    type_id INT NOT NULL,
+    metric_id INT NOT NULL,
+    manufactur_id INT NOT NULL,
+    product_name TEXT NOT NULL CHECK ( product_name <> '' ),
+    prime_cost NUMERIC NOT NULL CHECK( prime_cost > 0 ),
+    sale_price NUMERIC NOT NULL CHECK ( sale_price > 0 ),
+    product_quantity   INT     NOT NULL CHECK (product_quantity >= 0),
+    expiration_date DATE NULL,
+    manufacturing_date DATE    NOT NULL,
+    
+    FOREIGN KEY (metric_id) REFERENCES table_metrics(id),
+    FOREIGN KEY (type_id) REFERENCES table_product_types(id),
+    FOREIGN KEY (manufactur_id) REFERENCES table_manufacturers(id)
+);
+
+CREATE TABLE table_order_history (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    order_id INT NOT NULL,
+);
+//
+
+CREATE TABLE table_orders (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    client_id INT NOT NULL,
+
+
+    FOREIGN KEY (client_id) REFERENCES table_clients (id),
+);
+
+CREATE TABLE table_clients (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    person_id INT NOT NULL,
+    discount_id INT NOT NULL,
+    is_subscription BOOLEAN DEFAULT FALSE,
+
+    FOREIGN KEY (person_id) REFERENCES table_persons (id),
+    FOREIGN KEY (discount_id) REFERENCES table_discounts (id)
+);
+
+CREATE TABLE table_sellers (
+    id GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    person_id INT NOT NULL,
+    position_id INT NOT NULL,
+    date_of_employment DATE NOT NULL,
+    paycheck NUMERIC NOT NULL CHECK ( paycheck > 0 ),
+
+    FOREIGN KEY (person_id) REFERENCES table_persons (id),
+    FOREIGN KEY (person_id) REFERENCES table_persons (id)
+);
+
+CREATE TABLE table_sales (
+    id INT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+    product_name_id INT NOT NULL,
+    order_id  INT NOT NULL,
+    seller_id INT NOT NULL,
+    client_id INT NOT NULL,
+    quantity INT NOT NULL CHECK ( quantity > 0 ),
+    date_sale DATE NOT NULL,
+    
+    FOREIGN KEY (product_name_id) REFERENCES table_products (id),
+    FOREIGN KEY (order_id) REFERENCES table_orders (id),
+    FOREIGN KEY (seller_id) REFERENCES table_sellers (id),
+    FOREIGN KEY (client_id) REFERENCES table_clients (id)
+);
\ No newline at end of file
diff --git a/testy2e21ue21kpor21q[l.sql b/testy2e21ue21kpor21q[l.sql
new file mode 100644
index 0000000..ba86340
--- /dev/null
+++ b/testy2e21ue21kpor21q[l.sql
@@ -0,0 +1,75 @@
+CREATE TABLE table_products
+(
+    id                  SERIAL  NOT NULL PRIMARY KEY,
+    product_type_id     INT     NOT NULL PRIMARY KEY,
+    product_features_id INT     NOT NULL PRIMARY KEY,
+    name                TEXT    NOT NULL CHECK ( name <> '' ),
+    sale_price          NUMERIC NOT NULL CHECK ( sale_price > 0 )
+);
+
+CREATE TABLE table_product_features
+(
+    id                SERIAL  NOT NULL PRIMARY KEY,
+    amount_of_product INT     NOT NULL CHECK ( amount_of_product > 0 ),
+    manufacturer      TEXT    NOT NULL CHECK ( manufacturer <> '' ),
+    cost_price        NUMERIC NOT NULL CHECK ( cost_price > 0 ),
+    FOREIGN KEY (id) REFERENCES table_products (product_features_id)
+);
+
+CREATE TABLE table_product_types
+(
+    id           SERIAL NOT NULL PRIMARY KEY,
+    product_type TEXT   NOT NULL CHECK ( product_type <> '' ),
+    FOREIGN KEY (id) REFERENCES table_products (product_type_id)
+);
+
+CREATE TABLE table_about_sales
+(
+    id              SERIAL NOT NULL PRIMARY KEY,
+    seller_id       INT    NOT NULL PRIMARY KEY,
+    client_id       INT    NOT NULL PRIMARY KEY,
+    product_name_id INT    NOT NULL PRIMARY KEY,
+    sale_price_id   INT    NOT NULL PRIMARY KEY,
+    number_of_sales INT    NOT NULL CHECK ( number_of_sales > 0 ),
+    date_of_sale    DATE   NOT NULL,
+    FOREIGN KEY (client_id) REFERENCES table_client_identification (id)
+
+);
+
+CREATE TABLE table_sellers
+(
+    id                 SERIAL NOT NULL PRIMARY KEY,
+    post_id            INT    NOT NULL PRIMARY KEY,
+    first_name         TEXT   NOT NULL CHECK ( first_name <> '' ),
+    last_name          TEXT   NOT NULL CHECK ( last_name <> '' ),
+    date_of_employment DATE   NOT NULL,
+    sex                TEXT   NOT NULL CHECK ( sex <> '' ),
+    paycheck           INT    NOT NULL CHECK ( paycheck > 0 )
+);
+
+CREATE TABLE table_posts
+(
+    id         SERIAL NOT NULL PRIMARY KEY,
+    job_tittle TEXT   NOT NULL CHECK ( job_tittle <> '' ),
+    FOREIGN KEY (id) REFERENCES table_sellers (post_id)
+);
+
+CREATE TABLE table_client_identification
+(
+    id        SERIAL NOT NULL PRIMARY KEY,
+    client_id INT DEFAULT NULL PRIMARY KEY,
+    FOREIGN KEY (id) REFERENCES table_clients (id)
+);
+
+CREATE TABLE table_clients
+(
+    id                  SERIAL  NOT NULL PRIMARY KEY,
+    purchase_history_id INT     NOT NULL PRIMARY KEY,
+    first_name          TEXT    NOT NULL CHECK ( first_name <> '' ),
+    last_name           TEXT    NOT NULL CHECK ( last_name <> '' ),
+    client_email        TEXT    NOT NULL CHECK ( client_email <> '' ),
+    phone_number        TEXT    NOT NULL CHECK ( phone_number <> '' ),
+    sex                 TEXT    NOT NULL CHECK ( sex <> '' ),
+    discount            NUMERIC NOT NULL CHECK (discount > 0 ),
+    mailing             BOOLEAN NOT NULL DEFAULT FALSE
+)
\ No newline at end of file