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What Is Cardinality in Data Modeling

The role that cardinality plays must not be underestimated when defining the relationships between business objects or database entities represented as database tables and columns. … See more

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URL: https://www.vertabelo.com/blog/cardinality-in-data-modeling/

A Data Model to Keep Track of Your Most Precious Possession

WebAnswering Questions About the Health Info Data Model How Can Users Store Health Information for All Their Family Members Individually? First, let’s talk about …

Category: Health Go Health

Clinic Management System Data Model

WebTo ensure a well-run clinic, we need to store employees’ personal data, roles, and schedules. This is the function of the five tables in the Employees and schedules subject …

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A Data Model for a Medical Appointment Booking App

WebPossible values for status are “active”, “canceled”, and “complete”. Initially the status would be “active”. It would become “complete” once the appointment is done. It will become …

Category: Health Go Health

A Complete Guide to Database Diagram Symbols

WebER Diagram. A complete guide to the symbols shown in entity-relationship diagrams (ERDs). Although data modeling became a necessity around the 1970s, there …

Category: Health Go Health

A Pet Care Data Model Vertabelo Database Modeler

WebMany people share their lives with cats, dogs, birds, and other animals. (I once had a pigeon for a while, until its wing mended.) What a lot of pet owners don't …

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Where to Find Database Diagram Examples

WebThe model consists of libraries, books, members, and loan information. Extra Tip #1: I have mentioned just a few business-oriented articles on the Vertabelo blog that …

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Data Model Design: A Mobile App Marketplace for Local Services

WebThe Data Model. The two main elements in this equation are the service providers and the customers. We won’t go into too much detail on how we store the …

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Explaining an ER Diagram, With Steps and Use Cases

WebEntity-relationship diagrams (ERDs) are used to visualize data and relationships among the entities of a system. At its core, an ER Diagram explains the …

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A Subscription Business Data Model Vertabelo Database Modeler

WebSection 1: Customers and Subscriptions. The Customers & subscriptions subject area is the only subject area in this DWH model contain two fact tables, …

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Best Practices for Database Schema Name Conventions

WebDocument the Naming Convention in Your ERD. The first best practice for naming conventions in data modeling is to write down all the criteria defining the adopted …

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A Subscription Business Data Model

WebThe Data Model. Our model is meant to cover a simple subscription-based business and all its related specifics. We’ll need to store products, customers, and …

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What Are Facts and Dimensions in a Data Warehouse

WebFacts and dimensions are the fundamental elements that define a data warehouse. They record relevant events of a subject or functional area (facts) and the …

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Database Design for Security: Best Practices to Keep Sensitive

WebLisandro Fernigrini. Lisandro is a Database Architect from Rosario, Argentina. With almost 20 years of experience in Oracle and SQL Server, among other …

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Life Insurance Data Model Vertabelo Database Modeler

WebFor the purposes of our insurance company data model, we’ll of course need to know who performed what action (e.g., who represented our company when working …

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A Data Model for Restaurants

WebCook – Reads the order details received from the supervisor, prepares the food, and informs the supervisor when it is ready. Busboy – Keeps track of which tables …

Category: Food Go Health

Creating Tables for Products and Services

WebThe tables we need for this are the product table, the stock table, and the product_sale_item table. The product table stores details about products we intend to …

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Dimensions of Dimensions: A Look at Data Warehousing’s Most …

WebThe structure is pretty straightforward: id – Surrogate key; time_date – Actual date; time_day – Day of the month; time_week – Week in the year; time_month – Month …

Category: Health Go Health

What Is a Many-to-Many Relationship in a Database

WebOnce again, instead of many-to-many, there’s a new table that’s automatically been named supplier_product.It has only two attributes: supplier_id: References the id …

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