0
votes
0answers
8 views

Design and queries for analysis of event-sequences

I will have to store sequences of events with certain properties in a database (MariaDB preferably) and I have some issues regarding the design and queries. The crucial part is the analysis of the ...
0
votes
0answers
10 views

Architecture for huge catalog of products

I need to upgrade my current system of product catalog. For currently I have a 12 000 items in catalog, it's not a lot, but I need to improve them for feature. I have a task to reorganize my database ...
1
vote
2answers
50 views

Database Design for Preserving Values and Additional columns

My colleague and I are having some trouble coming up with a database design, and I am doing my best to stay away from EAV for now. We have an entity called Preparation that stores configuration data ...
1
vote
1answer
152 views

Horizontal schema vs Vertical schema

I am but a modest SQL DBA. I would like to request your advice on the design of the central part of our new proposed database. Brent Ozar had something to say about this: Building A SQL table ...
5
votes
2answers
416 views

Alternative to EAV for dynamic fields in a star schema data warehouse

I need to support dynamic fields and values in a big datawarehouse for storing API requests log, my user case is that I need to store all API requests query string and able to perform query against ...
3
votes
1answer
83 views

Help with “Flexible” vs Fixed Tables

We are designing a database in SQL Server to handle sales commissions. A diagram of the current schema looks like this: There are only a couple of us on the project, and our boss dropped this ...
0
votes
1answer
141 views

To EAV or not to EAV?

I am working on an application which records data from different forms. New forms can (and will be) constructed dynamically by an admin. I am wondering what would be the correct way to save this data ...
1
vote
1answer
120 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 ...
5
votes
1answer
1k 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
56 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 ...
39
votes
5answers
4k 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 ...
1
vote
2answers
738 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 ...
8
votes
3answers
6k 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 ...
4
votes
1answer
930 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?