Chapter 17: Creating a Database Quiz Yourself Answers 1. A field is
Chapter 17: Creating a Database Quiz Yourself Answers 1. A field is

... 2. A record is all the fields about a single person, place, object, event, or idea collected in a row in a table. 3. Tables in a relational database are related through common fields. 4. The primary key, whose values uniquely identify each record in a table, is called a foreign key when it is placed ...
Operating System Market Shares
Operating System Market Shares

... Operating System Market Shares ...
Slide 1
Slide 1

... By Stephanie Wood And Nedziba Bubregovic ...
Database Engines for Biosciences
Database Engines for Biosciences

... One-column tables can be added and removed without affecting the existing tables ...

Entity–attribute–value model

Entity–attribute–value model (EAV) is a data model to describe entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. In mathematics, this model is known as a sparse matrix. EAV is also known as object–attribute–value model, vertical database model and open schema.