Entity-Attribute-Value. A data model with a potentially big number of attributes of which only few apply to a single entity.
1
vote
1answer
35 views
Multi-variance products
My current system houses different variants of Products in different tables;
Productgroups
Productcolors
Productsizes
Productmodels
Products can reside under 1 Productgroup and can have ...
4
votes
1answer
442 views
EAV structure explained in Layman's terms
I've read several articles online that explain how EAV structures work, but there are different interpretations of them. Some articles mention that it's a representation of a data model metadata (or ...
0
votes
0answers
45 views
When is should/shouldn't the Entity Attribute Value (EAV) pattern be used? [duplicate]
Possible Duplicate:
Is there a name for this database structure?
The Entity Attribute Value (EAV) pattern usually has three columns: foreign key, attribute, and value. Attributes of data ...
29
votes
5answers
1k views
Is there a name for this database structure?
Noob question, sorry if it's too basic for this exchange. We process a routine data feed from a client who just refactored their database from a form that seems familiar (one row per entity, one ...
5
votes
2answers
199 views
Solutions for reporting off of an EAV structured database?
Existing setup SQL Server 2005 with standard EAV table that users want to slice and dice with a BI tool (Cognos).
Is there any hope that we can transform this data into a format that we can report ...
1
vote
2answers
302 views
Which is better for long term database scalability: adding columns or having key/value store
For application, which has few (5-10) settings at the moment but will have a lot more (up to 100) in the future which would be better approach:
to add new columns to settings table every time new ...
5
votes
3answers
2k views
Inventory database structure when inventory items have varying attributes
I'm building an inventory database to store enterprise hardware information. The devices the database keeps track of range from workstations, laptops, switches, routers, mobile phones, etc. I'm using ...
2
votes
1answer
418 views
PostgreSQL versus MySQL for EAV structures storage
Is there any practical difference or what are the advantages of using Postgres 9.x versus MySQL 5.x for storing EAV (Entity-Attribute-Value) structures, especially in terms of read performance?
4
votes
3answers
1k views
Optimizing query using view on EAV structure
An application is writing into a database that follows an EAV structure, similar to this:
CREATE TABLE item (
id INTEGER PRIMARY KEY,
description TEXT
);
CREATE TABLE item_attr (
item ...
3
votes
3answers
216 views
Does separating VARCHAR values based on size have a performance gain?
I am working with a team that is trying to implement an EAV system. They have decided to split the attribute-value tables out by type and they are debating using different tables for different size ...
