Tag: Logical Data Model
What Logical Models Data Types Are Available in Vertabelo?
Logical models define the initial blueprint of your database. Read along to learn how to create them and what attribute data types are available in Vertabelo.
In this article, we’ll introduce the logical model. It essentially illustrates the structure of entities, attributes, and relationships in your database. Also, you’ll see the difference between logical and physical models. In the end, we’ll create a logical model in Vertabelo, which will include creating entities with attributes of specific data types.
What Are the Different Types of Data Models?
A data model determines the logical structure of a database. It helps you find possible design issues before implementing and deploying the database. However, there are different types of data models which are used for different things. That’s what we’ll discuss in this article.
The first step you should do when creating a new database is to model it. There are some basic principles that should be followed in this case.
What Are Conceptual, Logical, and Physical Data Models?
Depending on the purpose, we may need to create either a conceptual, logical, or physical data model. Find out the differences and use cases for each one.
Data modeling implies identifying and defining entities and their relationships for a business solution. It requires a good understanding of the desired business outcome and is the foundation for creating a robust software solution.
The different model types (conceptual, logical, and physical) have different levels of detail and are used at different stages of the software development process.
Vertabelo Feature: Amazon Redshift Support in Vertabelo
Find out how to design an Amazon Redshift schema in Vertabelo.
Thanks to increasing volumes of data, analytical databases like Amazon Redshift are gaining market. We introduced Redshift support at the end of 2019; in this article, we will explain how to design a Redshift data model using Vertabelo.
How to Create a Model Let's start with the data model creation process. To create a Redshift schema, please:
Log into Vertabelo and click on Create new document.
How to Generate a Physical Diagram from a Logical Diagram in Vertabelo
Have you finished preparing your logical data model in Vertabelo? Awesome! In this article, we'll show you how to generate the physical data model from the logical model in Vertabelo. It’s just a few clicks away. Ready? Let's dive into it.
Quick Intro In this article, we'll deal with a slightly modified version of Microsoft's Northwind Database. We often use it in our LearnSQL courses, such as Customer Behavior Analysis in SQL.
Vertabelo Features: Logical Diagrams
Find out how to create logical data models in Vertabelo! If you have some experience with physical diagrams, this will be as easy as pie.
There are three different levels of data models: conceptual, logical, and physical. Of these, the conceptual model is the most abstract, and the logical model has a few more technical details. The physical model has all the details of the physical database, such as data types (integer, decimal, money, varchar, etc.
What a Concept! Is Logical Data Modeling Obsolete?
When databases were sized in megabytes rather than petabytes, their design was a well-defined discipline of data analysis and implementation. A progression of modeling steps – from conceptual and logical through relational and/or physical – promised successful deployment.
But as we passed more orders of magnitude in data volume, we seemed to stop seeking modeling approaches to manage that volume. So the question arises: Is logical data modeling obsolete?
