I've added a PayPal button to make it easier for people who want to make a voluntary contribution (such as $10) to help with the cost of producing these Databases. Ten of my Data Models are featured as Starter Databases for Microsoft SQL Server 2005 Express. Here are more than 500 very useful 'Kick-Start' Data Models that I have created since I started 5 years ago,   and here's the Top 20 If you would like an Access Database for any of these Models, email me at dba_requests-at-myway.com, simply replace -at- by an @ sign, and put the Database name in the Subject. If you are new to Databases, then check out my new Tutorial on Understanding a Database Schema. You are invited to join my new Community for people interested in Databases, which has members from 80 different Cities around the world. Access Control Accidents at Work Accommodation (Long-term) Actions,Decisions,People & Property Afghanistan Rainfall Agents Commissions Aircraft Parts and Orders Airline Reservations Amazon and Starbucks Animal Shelters Apartment Rentals Aquarium Stores Area Regulations Archeology Ars Digita BootCamp Assets Maintenance Asylum Seekers and Refugees Athletes and Events Athletes and Teams ATM Machines Auction Web Site Avon Cosmetics Baby-Sitters and Nannies Ballet Companies (Casting Productions) Ballet Companies (Org and People) 'Bang for the Buck' Models Catalogs of Products Customers and Products Customers and Services Marriages (Contemporary) Marriages (Traditional) Partnerships and Relationships Product Catalogs Generic Foundation Reservations Bank and Branches Bankrupts Basel II Accord BBC (UK) Behavior Monitoring Best Practice Bidders and Buyers Bill of Materials Blogs BMEWS Boating Marinas Bookstore Bookstore and Warehouses Books and Libraries Botanical Gardens Boutiques Business 2 Business e-Commerce Business 2 Consumer e-Commerce Business Directories Call Centers Canal Trips Car Dealership Car Hire Car Park Security Car Parking Enforcement Car Parts Suppliers Carphone Warehouse Car Sales Car Service Center Case Management (Lawyers) Case Management (Social Workers) Casinos Catalogs of Products Catering Businesses for Schools Catering Services Catteries CD Collection Cemetaries Census Results Charities Chess Tournaments Children in Institutions (UNICEF) Children's Aid Rcds Mgt Childrens Common Assessment Framework Children's National Database Children's Playgroup Church Members (Visio) Church Praise Teams Church Sunday Schools Cinema Bookings Circus Cirque du Soleil Citizens and Services City Councils City Hall Certificate Registration City Licences City Tourist Guide Click Stream Analysis Clients and Consultants Clients and Fees Clients and Locations Clinical Trials Clown Registry Club Members Coach Trips Commercial Web Sites ... Avon Cosmetics Cirque du Soleil Dog Whisperer eBay Deals MyLifeBits Research SalesForce Shrek 2 Movie Ticketmaster Coding 4 Fun Projects Communities ... FAQs and Newsletters Personalization Philip Greenspun Publish/Subscribe & KPI Portal User Registration Complaints and Feedback Competition Results Conference Centers Construction and Manufacturing Construction Jobs Bidding Consultants and Clients Consultant Search Web Site Contacts and Products Contact Management Contract Management Corporate Intranet Cosmetics Home Sales Course Catalogs Consumer Packaged Goods (CPG) Credit Accumulation (Europe) Crisis Call Centers CRM and Personalization CRM - Microsoft's Data Model CSR Framework CVs and Job Histories (Visio) Dance School Data Architecture Data Dictionary Data Warehouse ... Customers and Purchases eCommerce Data Warehouse Loading a Data Warehouse Pharmaceuticals Snowflake Design for Transaction Star Design for Teaching Schedule Star Design for Transaction (Conceptual) Star Design for Transaction (Physical) Databases for Life Dating Sites Day Care Centers Debt Collection Department Store Dietician's Consulting Practice Dictionaries for Foreign Languages Digital Challenge (UK) Diseases and Symptoms Doctor's Practice Document Management Document Management (Specific) Document Publication Document Workflow Dog Kennels Dog Whisperer Domestic Violence Centers Driving School Education :- University Course Catalogs School Management System Student Accommodation Student Assessments Student Assignments Student Athletes and Teams Student Exams Student Loans Student Rosters Student Work Placements eBay Deals e-Commerce Games Web Site Orders & Shipments Photo Catalogs e-Government UK e-Govt Standard Data Elephant Sanctuaries Emergency Services Employees Leave Records Employees working at Home Employment Agencies Endangered Species Enterprise Information Repository Data Migration Mapping Generation of Entities Glossary of Business terms Glossary with Queries EPOS Equipment Maintenance Estimating Development Costs ERP Event Reservations Customers :- Clients and Fees Clients and Locations CRM Customer Metrics CRM and Personalization CRM Top-Level Architecture CRM Top-Level Overview Customers with multi-lingual B2C Customers at a Bank Customers at a Bookstore Customers at a Call Center Customers and Addresses Customers and Campaigns Customers and Car Hire Customers and Car Sales Customers and Car Servicing Customers and Dept Stores Customers and Deals (UML) Customers and Deliveries Customers and e-Commerce Customers and Games Shops Customers and Hairdressers Customers and Hardware Store Customers and a Health Center Customers and Insurance Customers and Invoices Customers and Loans Customers and Orders Customers and Partial Deliveries Customers and Phone Bills Customers and Products Customers and Purchases Data W'hse Customers and Services Customers Card Transactions Customer Class Scheduling Customers Comm & Personal Customer Data Customer Data Catalog Customers (Commercial & Personal) Customer MetaData Repository Customer Metrics Customer Order Tracking Generic Customer Model (Popkin) FAQs Families and Wills Farm Management Fashion Boutiques Father of all Data Models FBI Global Database Feedback and Complaints File Archiving Systems Financial Information Portal Fingerprint Recognition Foreign Language Dictionaries Forensic Science Labs Forklift Truck Servicing Franchise Operators Freight Forwarders Fuel Coupons Mgt Fund Raising Funeral Homes Games Features Games Store Genealogy and Family Trees Generic Data Models Circus (Events & Players) Customers and Services Document Management Father of All Models Generic Foundation Organisations and People Organisations, People and Transactions Organisations,Members & Meetings Patient Care Reservations Shrek 2 Movie (Events & Places) Transport User-defined Hierarchies George Orwell's 1984 Global Accountability Global Community Global Consulting Global Law Firm Global Reference Database Golf Club Management Golf Tournaments Google AdSense Google Android Phone Platform GRI Indicators GRI Repository GRI User's Portal Gym Training Diary Hairdressers Appointments Harbour Management Hardware Sales Health Centers Health Clubs Health Insurance Claims Help Desk Hierarchies & Trees Business Intelligence / MI Employees Management Hierarchies Organization Hierarchies Parties and Phones Preferences Product Hierarchies Reference Data Manager User-Defined Hierarchies Vehicle Parts Manufacture World Language Classification (with Oracle CONNECT BY) Highways Agency (UK) Holiday Homes Home Libraries Hospice Patient Care Hospital Admissions Hospital Outpatients Hotel Reservations HR or Personnel Department Houses and Rooms IAA Insurance Party Indigenous Peoples Icons of the Western World Inheritance Models Charities City Tourist Guide Customers Commercial and Personal Games Store Insurance Brokers Libraries for Lawyers National Trust (UK) Photo Catalogs School Management System Shrek 2 Movie Travel & Tourism Worldwide Insurance Brokers Insurance for Vehicles Insurance (Personal) Intelligent Environments Interior Design Companies Internet Music Radio Stations Inventory Control Inventory and Equipment Maintenance Inventory Control (Files in Boxes) Inventory Control (Manuals) Inventory Control (Publishing) Inventory Control (Retail Store) Inventory Control (Sports Centers) Inventory Control for a Pharmacy Inventory of Rental Equipment Inventory of Servers Inventory of Tooling Equipment Investment Banking Issue Tracking (Software) Jewellery Stores Job Scheduling Judges and Courts Justice Department Key Performance Indicators Kitchen Cabinets Knowledge Management Laboratory Management Land Registry Landscape Gardening Law Enforcement Case Management Fingerprint Recognition Forensic Science Labs Judges and Courts Justice Department Lawyers, Cases and Bills Libraries for Lawyers Police Information Reports Prisons and Prisoners Tracking Evidence Traffic Cops and Tickets Lawn Bowling Clubs Legal Case Management Libraries Libraries Basic Model Libraries and Books Libraries of Digital Assets Libraries of Sheet Music Libraries for Lawyers Libraries for Teachers Libraries for UK Schools My Library (for Amazon Web Svcs) Virtual Library for MyLifeBits Licences and Permits Limousine Services Loan Management System Local Govt (UK) Logistics Long Term Accommodation Magazine Subscriptions Mail System Maintenance Contracts :- For Products with no Parts For Products with Parts (Dezign) Making a Movie Manufacturing :- Aircraft Orders and Parts Assets Maintenance Bill of Materials Construction and Manufacturing Customer Purchases Data W'house Paper Manufacturing Product Catalogs Tracking Customer Orders Vehicle Maintenance Vehicle Parts Manufacture Maritime Models :- Freight Forwarders Harbour Management Marine Archeology Maritime Museums Scuba Diving Swimming Clubs US Navy Marriages Master Data Management Medical :- Dietician Practice Doctor's Practice Health Center Health Insurance Claims Hospice Patient Care Hospital Admissions Hospital Outpatients Mortuaries Natural Disease Treatments Nurses Roster Nursing Home Patient Care Pharmacies and Generics Pharmacies and Prescriptions Pharmaceutical Supplies Symptoms and Diseases Message Board for a Web Site MetaData Management Middle East Conflict Modelling Agency Mortuaries MP3 Music Site Movie Making Museums (Simple) Museums (Complex) Music over the Internet Musicians in Newspapers Musicians in a Band My Life MyLifeBits Research My Work My Life and Work National Trust (UK) Native Peoples Natural Disease Treatments Newsagents Newsletters Not For Profits (NfPs/NPOs) Nurses Roster Nursing Home Offshore Drilling Equipment Olympic Sports Opticians Oracle Data Dictionary Oracle Database Rpt Oracle PL/SQL Orders and Parts Organisations and People Organisations and Transactions Organisations,Members & Meetings Package Delivery Service Paintings on Loan Parking Space Registration Parties and Products Partners in a Firm Patient Care Payrolls Performance Monitoring Permits and Licences Personalization Personal Insurance Pharmacies and Generics Pharmacies and Prescriptions Pharmaceutical Supplies Philip Greenspun's Communities Phone Bills Photo Catalogs (e-Commerce) Piano Tuners Picture Library Pizza Deliveries Plane Spotting Police Information Reports Popkin System Architect :- Data Warehouse Data Dictionary Generic Customer Model Hotel Reservations National Trust Visitors Portals Portals and KPIs Preserved Railways Prisons and Prisoners Products :- Bill of Materials Product Catalogs Product Categories Product Characteristics Product Distribution Product Hierarchies Product Servicing Products and Security Project Planning Project Staff Properties (National Trust) Properties (Real Estate) Property Development Proposals, Projects & Donors Pub Quiz League Pubs and Parties Quantity Surveyors Questionnaire - Basic Questionnaire - Complex Questionnaire - Multiple Choice Railway Reservations Ratings and User Reviews Real Estate Agents Real Estate Rentals Real Estate Sales Real World Series Generic Real World Overview of the Real World Real World of Entertainment Real World of Insurance Recipes Record Label Recruitment Agencies Reference Database Reference Data Manager Refugees & Asylum Seekers Removals Companies Report Generators Reservations :- Apartment Rentals Airline Reservations Car Hire Cinema Bookings Coach Trips Driving School Event Reservations Hairdressers Appointments Health Centers Holiday Homes Hotel Reservations Limousine Services Railway Reservations Restaurant Bookings Sports Centers Ticketmaster Vehicle Rental Resources Requesters Restaurant Bookings Restaurant Delivery Service Reviews and Ratings Risk Management (UML) Sailing Club Sales Commissions Salesforce.com Salesforce CDM Strategy Sales Promotion Analysis School Management System Search Engine Search for a Data Model Search for Musicians in Articles Search for Items in Newspapers Service Assessment Service Request Calls Scientific Research Shopping Malls Show Business Ballet Companies CD Collection Circus Clown Registry Dance School Talent Agency Theater Company ticketmaster Shrek2 Movie Single View of a Customer Snowflake Design SOA Social Capitalist Awards Social Networking Sites Social Workers Case Mgt Sperm Banks Sports Centers Staff Movements Star Design for Teaching Schedule Star Design for Transaction Stock Control Stock Control (Retail Store) Stock Control (Sports Centers) Stockmarket Data Street Cleaning Schedules Street Traders Students :- Behavior Monitoring Church Sunday Schools Class Scheduling Credit Accumulation (Europe) School Catering Businesses School Management Systems Student Accommodation Student Assessments Student Assignments Student Athletes Student Exams Student Loans Student Questionnaires Student Rosters Student Work Placements University Course Catalogs Surveyors and Contacts Swimming Clubs Symptoms and Diseases Talent Agency Tax Receipts Taxi Service Technical PC Support Telephone Bills Tenant Contact Tracking Theater Company Themes (Vertical Applns) CRM and Customers e-Commerce Education Entertainment Health and Fitness Law Enforcement Transport and Transport Ticketmaster Tracking Customer Orders Tracking Evidence Tracking Share Transactions Tracking Software Problems Tracking Tenant Contacts Traffic Cops and Tickets Transportation and Shipments Travel & Tourism Worldwide Treatments for Natural Diseases Trouble Tickets TV Talk Shows Tutorial on Database Schema UK e-Govt Standard Data UML Class Diagrams UN Global Compact Uniforms on Loan Union Grievances University Course Catalogs Used Flutes Exchange User-Defined Hierarchies User-Extendable Database User-Extendable DataDictionary User Portals User Portals and KPIs User Profiles User Reviews and Ratings Vehicle Insurance Vehicle Maintenance Vehicle Mileage Tracking Vehicle Parts Manufacture Vehicle Registration Authority Vehicle Rental Vets Practice Video Purchase Video Rental Volcanoes (Visio & Dezign) Web 2.0 Web Site for a Community Web Site for DBA Site Web Site Analysis Web Site Pages WebSite Registration Web Site Traffic Analysis Weddings Weighbridge Operations Wine Cellars Wiring Diagrams Workflow Worksheets World Health Organization STD World Language Classification Zoos A Design Note on Primary Keys My approach is very simple and always uses a system-generated unique number as a Primary Key, (except for Reference Data). This is called a surrogate key, but there is a 'gotcha' which can be deadly. It is all too easy to enter the same record twice. Therefore you must always be sure to enforce a unique constraint on the natural key. Luckily this is easy to do in Access which can be a good basis for clarifying your design and constraints. Why do I do this for free ? I design these Data Models for free to give something back to the Database community that has provided me with a good (and interesting) living for the past 15 years. Each Model is usually what I can do in the 20 minutes each day of voluntary work that I allocate from my consulting work. My intention is to provide a wide range of 'Kick Start' Models that anyone can use as a starting-point, and could extend cleanly and logically, with appropriate reference to the Business Rules. It is not my intention to provide Models that can be used off-the-shelf to meet the requirements of a large commercial organisation. After all, that is one of the things I do for a living !!! None of the Models is the complete and final solution in its area, but any of them can be added to easily and quickly to meet a specific requirement. The logic in each Model is correct and contains the minimum Entities for the area being modelled. It is easy to create a complex Model by combining these Kick-Start Models because they all follow the same design approach and standards. Generally, I try to make the Data Models and the associated Business Rules consistent, but I don't always define the Rules because that is a very valuable 'exercise for the student'. I'd be very interested in hearing any suggestions for improving this facility. Here's a first draft of a page of French Data Models.