Redgate Blog

2 August 2014

Chen Notation

Continuing our trip through different ERD notations, let's review the Chen ERD notation. Peter Chen, who developed entity-relationship modeling and published his work in 1976, was one of the pioneers of using the entity relationship concepts in software and information system modeling and design. The Chen ERD notation is still… Read more

Redgate Data Modeler

1 August 2014

Redgate Data Modeler

1 August 2014

Barker’s Notation

When looking at different kinds of ERD notations, it is hard not to come across Barker's ERD notation, which is commonly used to describe data for Oracle. Richard Barker and his coworkers developed this ERD notation while working at the British consulting firm CACI around 1981, and when Barker joined… Read more

Redgate Data Modeler

31 July 2014

Redgate Data Modeler

31 July 2014

ERD Notations in Data Modeling

An entity relationship diagram (ERD) is a diagram that defines the structure of database instances. Choosing which notation to use is typically left up to personal preference or conventions. Here, you can find some useful information about each notation. Read more

Redgate Data Modeler

28 July 2014

Redgate Data Modeler

28 July 2014

How to Model Inheritance in a Relational Database

In the process of designing our entity relationship diagram for a database, we may find that attributes of two or more entities overlap. In this case, we may create a subtype of the parent entity that contains distinct attributes and supertype entity. The article presents how to model inheritance… Read more

Chris Smith

21 July 2014

Chris Smith

21 July 2014

Five steps to an effective sprint retrospective

In a typical agile software development process, sprint retrospectives are meetings run at the end a development iteration. In those sessions the team looks back on what they have done and how they have done it, and decides what they can do to improve. More succinctly, the team inspect and… Read more

agile software development

retrospectives

Geoff Bones

18 July 2014

Geoff Bones

18 July 2014

Code kata 7: Producer-consumer problem

First, apologies for nodding off and not posting for the last few weeks. I have the usual set of excuses, which you can guess easily enough without the need to read them here. So, on to the kata: something a bit different, this time. It’s a repeat of a kata… Read more

Code Katas

Redgate Data Modeler

15 July 2014

Redgate Data Modeler

15 July 2014

How do I create a company account ?

If you need many accounts for your employees and don't want to pay for each account separately, create Redgate Data Modeler company account. A company account enables model sharing, inviting people, working on a model at the same time, and paying for group of workers. … Read more

Redgate Data Modeler

15 July 2014

Redgate Data Modeler

15 July 2014

N-ary relationship types

When we design a database, we draw an entity relationship diagram (ERD). It helps us understand what kind of information we want to store and what kind of relationships there are. It is imperative that this diagram is easy to read and understand. The number of entities in a relationship is… Read more

Redgate Data Modeler

15 July 2014

Redgate Data Modeler

15 July 2014

How do I pay for a company account after the trial period ends ?

If your 14 days company account trial period is going to end and you want to continue using the company account, there is an easy way to set up a monthly subscription for the appropiate number of users. Read more

Emma Armstrong

27 May 2014

Emma Armstrong

27 May 2014

Take security in your STRIDE

When you phone up for house insurance, the insurance company asks you; ”Do you have a five lever mortice deadlock? Does it comply to BS3621? Do you have a burglar alarm and so on? These are all very standard questions for this situation, and we need to make sure we… Read more

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Redgate Blog

Chen Notation

Barker’s Notation

ERD Notations in Data Modeling

How to Model Inheritance in a Relational Database

Five steps to an effective sprint retrospective

Code kata 7: Producer-consumer problem

How do I create a company account ?

N-ary relationship types

How do I pay for a company account after the trial period ends ?

Take security in your STRIDE

2025 Stand der Datenbank-Landschaft

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Sicherheit und Compliance

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Produktivität und Workflow-Automatisierung

KI-bereite Daten

Datenbankmodernisierung

Effizienz und Kostenoptimierung

Cloud-Migration und Workload-Optimierung

Redgate Flyway

Redgate Monitor

SQL Toolbelt Essentials

Redgate Test Data Manager

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