--------------------------------------------------------------------------------
--
-- SQL schema definition of the Better Digital, Ltd. (BDL) corporate
-- database, as specified in INFO 214 Assignment 1.
--
-- Schema written for Oracle11g.
--
--------------------------------------------------------------------------------
--
-- NOTE: this script will drop any existing tables automatically so
-- that they can be re-created.
--
DECLARE
TYPE Table_Names_T IS TABLE OF VARCHAR2 ( 32 ) ;
Table_Names Table_Names_T := Table_Names_T ( 'ASSEMBLY', 'COMPONENT', 'CUSTOMER', 'ORDER_HEAD', 'ORDER_LINE', 'PRODUCT', 'SALE_HEAD', 'SALE_LINE', 'STAFF', 'SUPPLIER' ) ;
Table_Nonexistent EXCEPTION;
PRAGMA Exception_Init ( Table_Nonexistent, -942 ) ;
BEGIN
FOR T IN Table_Names.FIRST..Table_Names.LAST
LOOP
BEGIN
EXECUTE IMMEDIATE 'DROP TABLE ' || Table_Names ( T ) || '' || ' CASCADE CONSTRAINTS';
EXCEPTION
-- We only want to suppress exceptions due to the table not existing. That's
-- -942: ORA-00942: table or view does not exist
-- Other exceptions, such as being unable to drop a table because of locks(!), should not be trapped, so that the user sees an error message.
WHEN Table_Nonexistent THEN
DBMS_Output.Put_Line ( SQLCODE || ': ' || SQLERRM || ': Ignoring nonexistent table ' || T ) ;
-- null;
END;
END LOOP;
END;
/
--------------------------------------------------------------------------------
--
-- Staff table
--
CREATE TABLE Staff
( Staff_ID NUMBER(7),
--
Surname VARCHAR2(50) NOT NULL,
--
Firstnames VARCHAR2(50) NOT NULL,
--
Phone VARCHAR2(15) NOT NULL,
--
Address VARCHAR2(150) NOT NULL,
--
Department VARCHAR2(18) NOT NULL
CONSTRAINT Staff_Department_Invalid
-- Yes, this should really be a lookup table :)
CHECK ( Department IN ( 'Central Management',
'Sales ' || chr(38) || ' Marketing',
'Personnel',
'Manufacturing',
'Inventory',
'Accounts' ) ),
--
Position VARCHAR2(20) NOT NULL
CONSTRAINT Staff_POSITION_INVALID
-- Yes, this should really be a lookup table too :)
CHECK ( Position IN ( 'CEO', 'CTO', 'CFO', 'CIO', 'Director',
'President', 'Vice-President', 'Manager',
'Personal Assistant', 'Secretary',
'Technician', 'Researcher', 'Designer',
'Assembler', 'Programmer', 'Contractor',
'Sales Representative', 'Accountant',
'Inventory', 'Assistant' ) ),
--
Salary NUMBER(7,2) NOT NULL
CONSTRAINT Staff_Salary_Range_Invalid CHECK ( Salary BETWEEN 1000 and 99999.99 ),
--
Comments CLOB,
--
CONSTRAINT STAFF_PK PRIMARY KEY ( Staff_ID )
);
--------------------------------------------------------------------------------
--
-- Customer table
--
CREATE TABLE Customer
( Customer_ID NUMBER(7),
--
Name VARCHAR2(50) NOT NULL,
--
Contact_Person VARCHAR2(50),
--
Phone VARCHAR2(15) NOT NULL,
--
Address VARCHAR2(200) NOT NULL,
--
Email VARCHAR2(50),
--
Comments CLOB,
--
CONSTRAINT Customer_PK PRIMARY KEY ( Customer_ID )
);
--------------------------------------------------------------------------------
--
-- Supplier table
--
CREATE TABLE Supplier
( Supplier_ID NUMBER(7),
--
Name VARCHAR2(50) NOT NULL,
--
Contact_Person VARCHAR2(50),
--
Phone VARCHAR2(15) NOT NULL,
--
Address VARCHAR2(200) NOT NULL,
--
Email VARCHAR2(50),
--
Comments CLOB,
--
CONSTRAINT Supplier_PK PRIMARY KEY ( Supplier_ID )
);
--------------------------------------------------------------------------------
--
-- Product table
--
CREATE TABLE Product
( Product_Code NUMBER(8),
--
Description VARCHAR2(50) NOT NULL,
--
Stock_Count NUMBER(5) NOT NULL
CONSTRAINT Product_Stock_Count_Too_Low CHECK ( Stock_Count BETWEEN 0 AND 99999 ),
--
Restock_Level NUMBER(5)
CONSTRAINT Product_Restock_Level_Too_Low CHECK ( Restock_Level BETWEEN 0 AND 99999 ),
--
Minimum_Level NUMBER(5),
--
List_Price NUMBER(7,2) NOT NULL
CONSTRAINT Product_List_Price_Too_Low CHECK ( List_Price BETWEEN 0 AND 99999.99 ),
--
Assembly_Manual BLOB,
--
Assembly_Program BLOB,
--
CONSTRAINT Product_Min_Level_Invalid CHECK ( ( Minimum_Level >= 0 ) AND ( Minimum_Level < Restock_Level ) ),
--
CONSTRAINT Product_PK PRIMARY KEY ( Product_Code )
);
--------------------------------------------------------------------------------
--
-- Component table
--
CREATE TABLE Component
( Component_Code NUMBER(8),
--
Suppliers_Code VARCHAR2(25) NOT NULL,
--
Description VARCHAR2(100) NOT NULL,
--
Stock_Count NUMBER(7) NOT NULL
CONSTRAINT Component_Stk_Count_Too_Low CHECK ( Stock_Count BETWEEN 0 AND 9999999 ),
--
Supplier_ID NUMBER(7) NOT NULL,
--
CONSTRAINT Component_PK PRIMARY KEY ( Component_Code ),
--
CONSTRAINT Component_FK_To_Supplier FOREIGN KEY ( Supplier_ID ) REFERENCES Supplier
);
--------------------------------------------------------------------------------
--
-- Assembly table
--
CREATE TABLE Assembly
( Product_Code NUMBER(8),
--
Component_Code NUMBER(8),
--
Quantity NUMBER(4) NOT NULL
CONSTRAINT Assembly_Quantity_Too_Low CHECK ( Quantity BETWEEN 1 AND 9999 ),
--
CONSTRAINT Assembly_PK PRIMARY KEY ( Product_Code, Component_Code ),
--
CONSTRAINT Assembly_FK_To_Product FOREIGN KEY ( Product_Code ) REFERENCES Product,
--
CONSTRAINT Assembly_FK_To_Component FOREIGN KEY ( Component_Code ) REFERENCES Component
);
--------------------------------------------------------------------------------
--
-- Sale_Head table
--
CREATE TABLE Sale_Head
( Sale_Num NUMBER(10),
--
Sale_Date DATE NOT NULL,
--
Date_Entered DATE DEFAULT SYSDATE NOT NULL,
--
Status VARCHAR2(11) NOT NULL
CONSTRAINT Sale_Head_Status_Invalid
CHECK ( Status IN ( 'pending', 'in progress', 'cancelled', 'backordered', 'shipped' ) ),
--
Staff_ID NUMBER(7) NOT NULL,
--
Customer_ID NUMBER(7) NOT NULL,
--
Comments CLOB,
--
CONSTRAINT Sale_Head_Date_In_Future CHECK ( Sale_Date <= Date_Entered ),
--
CONSTRAINT Sale_Head_PK PRIMARY KEY ( Sale_Num ),
--
CONSTRAINT Sale_Head_FK_To_Staff FOREIGN KEY ( Staff_ID ) REFERENCES Staff,
--
CONSTRAINT Sale_Head_FK_To_Customer FOREIGN KEY ( Customer_ID ) REFERENCES Customer
);
--------------------------------------------------------------------------------
--
-- Sale_Line table
--
CREATE TABLE Sale_Line
( Sale_Num NUMBER(10),
--
Product_Code NUMBER(8),
--
Quantity NUMBER(4) NOT NULL
CONSTRAINT Sale_Line_Quantity_Too_Low CHECK ( Quantity BETWEEN 1 AND 9999 ),
--
Actual_Price NUMBER(7,2) NOT NULL
CONSTRAINT Sale_Line_Act_Price_Too_Low CHECK ( Actual_Price BETWEEN 0 AND 99999.99 ),
--
CONSTRAINT Sale_Line_PK PRIMARY KEY ( Sale_Num, Product_Code ),
--
CONSTRAINT Sale_Line_FK_To_Product FOREIGN KEY ( Product_Code ) REFERENCES Product,
--
CONSTRAINT Sale_Line_FK_To_Sale_Hd FOREIGN KEY ( Sale_Num ) REFERENCES Sale_Head
);
--------------------------------------------------------------------------------
--
-- Order_Head table
--
CREATE TABLE Order_Head
( Order_Num NUMBER(10),
--
Order_Date DATE NOT NULL,
--
Date_Entered DATE DEFAULT SYSDATE NOT NULL,
--
Due_Date DATE NOT NULL,
--
Date_Completed DATE,
--
Status VARCHAR2(11) NOT NULL
CONSTRAINT Order_Head_Status_Invalid CHECK ( Status IN ( 'complete', 'in progress' ) ),
--
Staff_ID NUMBER(7) NOT NULL,
--
Supplier_ID NUMBER(7) NOT NULL,
--
Comments CLOB,
--
CONSTRAINT Order_Head_Date_In_Future CHECK ( Order_Date <= Date_Entered ),
--
CONSTRAINT Order_Head_Due_Date_Invalid CHECK ( Due_Date > Order_Date ),
--
CONSTRAINT Order_Head_Date_Comp_Invalid CHECK ( Date_Completed > Order_Date ),
--
CONSTRAINT Order_Head_PK PRIMARY KEY ( Order_Num ),
--
CONSTRAINT Order_Head_FK_To_Staff FOREIGN KEY ( Staff_ID ) REFERENCES Staff,
--
CONSTRAINT Order_Head_FK_To_Supp FOREIGN KEY ( Supplier_ID ) REFERENCES Supplier
);
--------------------------------------------------------------------------------
--
-- Order_Line table
--
CREATE TABLE Order_Line
( Order_Num NUMBER(10),
--
Component_Code NUMBER(8),
--
Qty_Ordered NUMBER(5) NOT NULL
CONSTRAINT Order_Line_Qty_Ord_Too_Low CHECK ( Qty_Ordered BETWEEN 1 AND 99999 ),
--
Price NUMBER(6,2) NOT NULL
CONSTRAINT Order_Line_Price_Too_Low CHECK ( Price BETWEEN 0 AND 9999.99 ),
--
Qty_Received NUMBER(5) NOT NULL
CONSTRAINT Order_Line_Qty_Rec_Too_Low CHECK ( Qty_Received >= 0 ),
--
CONSTRAINT Order_Line_PK PRIMARY KEY ( Order_Num, Component_Code ),
--
CONSTRAINT Order_Line_FK_To_Comp FOREIGN KEY ( Component_Code ) REFERENCES Component,
--
CONSTRAINT Order_Line_FK_To_Ord_Hd FOREIGN KEY ( Order_Num ) REFERENCES Order_Head
);
--------------------------------------------------------------------------------
--
-- Here endeth the schema.
--
--------------------------------------------------------------------------------
