Database design is the process of specifying the logical and/or physical parts of a database. The goal of database design is to make a representation of some "universe of discourse" - the types of facts, business rules and other requirements that the database is intended to model.
-1
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0answers
20 views
error in dataSearch using berkley DB [closed]
I've created a database using Berkley DB that stores N records where a record is a key/value pair. I originally populated it with only 20 records. With 20 records I managed to do a Key Search, and a ...
0
votes
3answers
64 views
choice of tables for a project to handle attendance
I'm working on my project in php [handling students attendance system]. I have a list of students along with their id[jntuno] and I need to create a database in mysql for storing the daily attendance ...
4
votes
1answer
92 views
Critique my Stack Overflow schema
I'm learning DB design. How would you change the following schema which tries to replicate Stack Overflow's functionality:
create_table "questions", :force => true do |t|
t.text ...
0
votes
1answer
93 views
Review database schema
The database is for a website showcasing advertising agencies. "Premium" paid accounts will have a profile page detailing the agency, a client page, and a creative portfolio with their work. Basic ...
3
votes
2answers
63 views
How to design DAOs that handle composite objects?
Suppose I have following elementary DTOs, each DTO corresponding to a database table:
class Event {
String name
}
class Player {
String name
}
DAOs for elementary DTOs:
class PlayerDao {
...
5
votes
2answers
926 views
Strategy to create audit trails for a SQL database
I wish to create audit trails for specific tables and columns in my database, and document who made the change, when it was made, and what the change was.
To do so, I will create the following ...
1
vote
1answer
135 views
Keeping track of people's relationships in MySQL using a people relation table?
I am trying to track relationships among people. I came up with my own solution, but wondering if there might be another way or better way of doing this. To keep it simplified, I'll post just the bare ...
1
vote
1answer
72 views
SQL vs MongoDB (TCG collection managment)
I'm designing a web application to help some friends and I manage our card collection. A relational database makes sense to me, so that was my first instinct.
The basic schema would like something ...
1
vote
1answer
87 views
Designing price calculation methods model (needs review)
I'm building an application for a bonded-warehouse. They have services calculated by Unit price like "Container surveillance duty = containers number x storage days x unit price" and they have ...
-1
votes
1answer
64 views
SQL Avoiding dynamic tables [closed]
I have following problem: I have program, that connects to IRC server, join several channels and for each user on it, count amount of messages. I have to put all this into MySql.
So, naive solution ...
2
votes
2answers
140 views
Database design improvement
I am doing a database design I want to create a database with information of employees, their jobs, salaries and projects
I want to keep information of the cost of a project (real value of project ...
2
votes
2answers
257 views
My database schema [closed]
I'm not sure if this would be okay to put here since it doesn't have code to look at, but this is my database I'm trying to create for an online firearm store. I'm new to database design and ...
3
votes
1answer
201 views
Is my ERD design for “Adding Friends Capability” is good enough? [closed]
I have a school project to create a simple networking site, And I want to know if my database design is good. I'm open for any suggestions to improve my design thanks!
9
votes
3answers
141 views
Object database schema, should i split my tables?
I have a database schema for a game to hold save files where some tables have a one-to-one relationship to Classes. And i was wondering if i should split up some tables.
Example troop_class table. It ...
4
votes
1answer
146 views
My first implementation of mongoDB
I'm new to Code Review, my assumption is that it is a place I can get feedback on working code that I've built, I hope that is right.
This is my first implementation of mongoDB, much much more to ...
2
votes
3answers
116 views
Referential MySql Design
How does this look? It has been over a year since my database concepts class and I have never worked with MySql. I have chosen InnoDB as my engine because of foreign key support using UTF-8 based on ...
1
vote
1answer
107 views
MySQL database with foreign key support
A modified review request has been made here.
Can I please have someone review this simple database design below and tell me if this is the correct way to achieve what I want to do?
What I am ...
1
vote
2answers
361 views
Is this the right db design for the most flexible and modular CMS with user management in CakePHP?
I would like to ask you guys if you could review my database design:
I think it is quite self-explanatory, but to be absolutely clear:
My goal is to make an application which has a super flexible ...
3
votes
1answer
505 views
Schema for Google Docs-like Sharing
I want to allow users to share documents (and other stuff) in a database-driven application.
I have designed the following schema to allow for this (postgresql). Some of the tables like Party are ...
1
vote
1answer
228 views
Is it proper TPT Inheritance
I have following model and database created using Entity Framework. Is it proper TPT Inheritance?
Is it possible to make the base class as abstract?
Model
Database
CODE
namespace LijosEF
{
...
0
votes
1answer
1k views
Data Structure for Categories and SubCategories
I have this relationship:
Many Objects to One Category
One Category to Many SubCategories
I am looking for the best way to store this in my Relational Database? Here were some of the ways I was ...
2
votes
1answer
140 views
Can't Spot the error? mySQL create table [closed]
Caution - noob alert. Gotta start somewhere...
1) Currently following a couple tutorials and simply can't locate the error preventing the creation of the table. I've even done this before. So simple! ...
5
votes
2answers
517 views
Database table with a single row - bad idea?
I have a "virtual scratchpad" Rails app that has pages (analogous to a piece of scratch paper), and each page has_many :notes (analogous to the notes that you'd write on that paper).
I want to count ...
3
votes
2answers
212 views
A database schema for articles and their revisions
I'm designing a super simple web application for creating articles. All articles on this site can be edited by different people and each edit is a revision. Using an RDBMS, this is my schema:
...
3
votes
1answer
360 views
Please review my database design for an online organization tool
The problem I'm trying to solve.
I'm a big fan of David Allen's Getting Things Done, but the myriad software tools and sites I've tried haven't impressed me that much. That's why I've decided to ...
0
votes
1answer
109 views
Package Manager in Python
I've written a package manager for OS X in order to improve my Python skills. This is the second programming project I've ever worked on, so I do not expect it to be great, or anything, but I would ...
6
votes
6answers
415 views
Database design review - tracking of many statuses [closed]
I have designed the following database for a small project. Please review and leave feedback. The main problem I'm having is to keep tracking of many statuses. The user wants to know the status of ...
1
vote
1answer
102 views
SQL table normalization upto what extent [closed]
I have an asp.net form which contains like 5 tabs and each tab has at least 15 fields in it. They all belong to one record so for the sake of simplicity lets call the PK as RecordId. Now i have 2 ...
2
votes
2answers
1k views
Need advice for my simple shopping cart's database structure
I’m trying to make a simple shopping cart application in PHP and am unsure of how to structure the database. I believe there are three tables that I need (but I could be wrong!):
1. products table
...
2
votes
1answer
90 views
MySQL query: blog entry has comments or not
How expensive is this query?
Lets say for example if I don't have a field called total_comments in my blog table. All I want to know is the blog has comments or not.
SELECT EXISTS (SELECT true FROM ...
3
votes
3answers
109 views
Is this DB design acceptable, or is there a better way?
Is this normalized properly ?? is there a more efficient way to design this DB ?
A Profile can have unlimited albums, any user can create an album from anyone's videos. An album may contain many ...
2
votes
1answer
219 views
Database Design Review (Part III)
I've been thinking a bit more on my database design sense
database-design-review
database-design-review-part-ii
I think I've settled on a database design based on the 2 reviews so I shouldn't be ...
0
votes
1answer
120 views
Database Design Review (Part II)
I've been thinking a bit more on my database design sense this post. The general idea is I'de like to create a generic database that can store information on any number of subject, similar to a wiki, ...
1
vote
2answers
742 views
Database design for an autoparts store
I'm creating a design database for an autoparts store (this is a project school). For the moment, I'm not sure if the relationship model especially in MODEL, MAKE, BRAND is correct (I really have no ...
1
vote
1answer
98 views
feedback wanted on Elixir db model
I have designed this model which is very flexible. For example, you can create asset types, assets and combinations of them infinitely. It is the front end to a Python Pyramid website, so all the ...
2
votes
1answer
175 views
Review my database structure and tell me your suggestions on it
I would like your thoughts on my database structure. I am kind of a rookie but I am trying. All of your suggestions, alternatives, ideas, additions are welcome. Thank you.
CREATE TABLE `buy` (
...
2
votes
2answers
807 views
review ERD for website [closed]
I am a noob and would like some help with the erd for a website I am building.
There are roles for the users that participate in the board. I'm not sure I have that down correctly.
I realize that I ...
3
votes
2answers
285 views
Creating contact tables
I have a module in my college project for managing Contacts.
I'm confused on how to design the contact table.
One contact can have multiple email, mobile, website addresses.
So I have created two ...
4
votes
5answers
1k views
Database schema for a school
Here is the database query needed to create the database:
create table Area
(
AreaId int primary key identity(1,1),
Name nvarchar(64) not null
)
create table Level
(
LevelId int primary key ...
3
votes
2answers
259 views
database design for an online learning application
It is an online learning application with different types of learnable items, that different users learn.
The users learn by spaced repetition (once right, wait a couple days, ask again), success is ...
7
votes
5answers
9k views
Database class using PDO
The point of this question
What about this piece of code? I'm actually using it while developing a simple application and it seems to cover all my needs. Also it uses PDO so that we don't really have ...
19
votes
7answers
2k views
Can you peer review my database design for a school system?
This system has to manage students, teachers, staff and grading. This is for production and is not a school assignment. As such, please let me know if I can improve on any aspect. :)
My main concern ...
