MySQL is an open-source, relational database management system.

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4
votes
2answers
300 views

Design interface for WebService to access several MySQL databases

I am currently trying to design an interface for a WebService that can access several MySQL databases. There will be 4 operations available, Add(), Read(), Update() and Delete(). The WebService just ...
5
votes
1answer
698 views

Social network notification system

Background I am working on an app for a client that includes some social networking features. I was originally developing the mobile front-end, but circumstances have left me in charge of developing ...
1
vote
0answers
1k views

Android, PHP session and JSON object retrieval

I am working on an app in android studio.. it currently has a login and registration system that are linked to a database and both work perfectly. I am now trying to carry over the user id value ...
0
votes
0answers
25 views

Edit files on multiple domains on Mambo CMS

I have multiple domains on same web server, all running on Mambo CMS. Each site uses same template and has roughly same site structure. I need to edit the same page on each website - is there a ...
-3
votes
1answer
284 views

using node.js server with mysql-module and PHP for a penny-auction website? [closed]

I'm building a penny-auction platform like DealDash and just read into the WebSocket and node.js topic. I used PHP, MySQL and Ajax to build the website. I'm nearly finished and just have to implement ...
1
vote
1answer
312 views

Am I planning my database/backend correctly?

I'm an iOS developer and to be honest I'm not really looking to become a database expert right at this moment, but I do need to know how to properly plan out what I believe to be a pretty cookie ...
0
votes
1answer
212 views

How to structure programs that interact with databases? [closed]

I've just finished a book on MySQL and I'm in the infantile stages of learning to couple that with Java. I know that the technology I need to learn is called JDBC and that it essentially allows you to ...
3
votes
2answers
157 views

How to infer the result of a query?

To understand what a query does, I have always thought the following is the procedure on evaluating a query: Form the table as specified in the FROM clause. Pick the rows from that table as ...
-2
votes
3answers
2k views

How to store integer array in mysql database [closed]

I am making a college attendence system so i need to store attendence of thousands of students. if I go for 1 column for each day then it will take 12*30 almost 360 column for a year. So I want to ...
1
vote
2answers
608 views

Is this a race condition?

I have a friend arguing this is a race condition, but I'm struggling to understand how. This is for a web application using PHP and MySQL where users can login and create tickets, these tickets have ...
1
vote
2answers
114 views

What is better for scalability for this specific dataset, MongoDB or MySQL?

I have a web app which has users, forms, and volunteers signed up on those forms. Currently I am using MongoDB and have it setup with a collection for admins, and a collection for forms with ...
3
votes
4answers
551 views

How to save many changes to database data?

I'm working on a feature which will pull many (say, 1000-5000) rows from a database, display them to the user and allow the user to edit them. This editing may involve changing text; adding rows at ...
0
votes
1answer
397 views

php Database operations in separate files?

I have a single page application. Select boxes need to be filled with select queries from the database. How do I structure the application? Currently I have a file add_details.php. It contains a ...
1
vote
1answer
965 views

Need to store Multiple Images (path) into MySQL after upload [duplicate]

I am trying to build my own little eCommerce CMS, and i want the expert opinion on how to handle multiple uploaded files (images). For Example: A user adds a new item, fills the necessary form data ...
2
votes
1answer
193 views

How to deal with server-side and client-side naming conventions that clash? [closed]

I have a project that uses the underscore naming convention for the MySQL database and PHP scripts but uses camelCase for the javascript application (a common scenario I'm sure). However, once JSON ...
3
votes
3answers
3k views

When to use a nosql database such as mongodb over mysql?

I'm new to the concept of nosql databases and have never used it. Based on what I've read and the little that I've understood I still don't see how they can be particularly useful if you can't make ...
0
votes
2answers
127 views

DB Schema for a questionnaire - Different output from different combinations of responses

A user is required to complete a questionnaire - answering the questions in various categories. Depending on the responses from the user, the user will be presented with a number of recommendations. ...
1
vote
2answers
230 views

Best Way To Store Images For Mobile Synchronization

The scenario is, I have a Web Dashboard (Developed using PHP + MySQL) and have Android and iOS Apps synchronizing data from the Web Dashboard (only one way i.e. Dashboard to Mobile Apps) Now the ...
1
vote
1answer
480 views

mySQL / PHP design pattern - one function multiple queries

So here's the gist of it. I'm looking for a design pattern where I can have one function, say queryHandler that gets the query and the parameters from a number of different functions and returns the ...
0
votes
1answer
469 views

Like structure table with Laravel and showing the most popular content at top

I am using Laravel to creating a website, my users can post questions and other users can write their comments under the post, each comment have Up vote and Down vote, and users can voting for ...
1
vote
1answer
63 views

Database integration of Rails and Laravel apps

I have some very small apps on a VPS running ruby on rails and a co-worker also have some of his own apps running on laravel at another VPS. So far we dont needed to share any data among the apps, but ...
51
votes
6answers
8k views

Should Latin-1 be used over UTF-8 when it comes to database configuration?

We are using MySQL at the company I work for, and we build both client-facing and internal applications using Ruby on Rails. When I started working here, I ran into a problem what I had never ...
2
votes
1answer
181 views

How to design database tables for a Factory class?

How can I design database table structure for a class that varies in its core parameters, when it is created by a factory method? I have a Factory like this: class ProductFactory { public ...
3
votes
3answers
254 views

Do I need use really INNER JOIN?

Imagine a coiffeur, with his services: +----+-----------------+--------+ | id | name | amount | +----+-----------------+--------+ | 1 | hair cut | 40 | | 2 | shampoo | ...
2
votes
1answer
105 views

What should be the structure of a person to person store database?

I am going to create a person to person store with Laravel, a website where its users can share and sell their product or their mobile, TV, Computer, Shoes, Shirts, Books, Cars, Bags, Animal, etc. I ...
2
votes
1answer
158 views

What is the purpose of stopwords?

I've just started learning about fulltext indexing and searching in MySQL and I've stumbled upon this list containing all of the "stop words" used in MySQL. I cannot understand what is tue purpose of ...
2
votes
1answer
846 views

Should I use foreign keys in my database if I use laravel?

I'm creating a website with Laravel for the first time. I checked relationships documentation today and it seems that Laravel just uses simple SQL queries. class User extends Eloquent { public ...
2
votes
0answers
210 views

PHP MySql - Statistical Reporting - Best Approach to query appointment system time utilization

I have built an appointments system for various medical practices. Practice schedule appointments - I am looking to provide analysis on the amount of time that has been utilised by the practice. I ...
0
votes
0answers
31 views

Querying all data vs required data [duplicate]

If I have a MySQL database that has a table that contains user data, would it be better to load all of the data from the table when loading a page that requires a users data (only one users data is ...
0
votes
1answer
3k views

Designing a scalable schema for college database [closed]

I am trying to build back end for college ERP system. The system will be based on LAMP. These is the scenario: Colleges have 5 branches There are 4-6 classes in each branch. There are 80 students ...
3
votes
2answers
1k views

Creating a separate table for images or adding “image fields” to many tables?

I need to create a database in which several tables have images. For example, users have profile pictures and uploaded ones and products have many pictures, as well. Is it better to have one MySql ...
1
vote
1answer
84 views

Should I do a different SQL table for user privacy settings or just keep it at the users table?

So I am developing a Web Application and I have some concerns about the database. I use a lot of boolean settings at the user table with the form privacy_allow_1, privacy_allow_that, ...
1
vote
2answers
345 views

Improve the speed of a Tomcat Server with MySQL

I'm developing an application with 3 sides, desktop (JavaFX), server (Tomcat) and Android. And a MySQL Database Server. The app receive mails and convert them into tasks. The tasks are sent to the ...
0
votes
0answers
33 views

I have two applications… use NoSQL or RDBMS? [duplicate]

I have two applications in the making: one is a budget management tool; the other is a article based places/restaurant guide. The budget management tool works where users create accounts (e.g. bank ...
0
votes
1answer
420 views

Notify about starting event

I am having quite a hard time figuring out how to solve this problem. Basically I have a mini social network with notifications and events. I want to add such functionality where 1 day before an event ...
0
votes
1answer
180 views

DAL / Model / Application-Design Question for a MVC Application

I have a device that stores raw binary log data as a BLOB in a MySQL DB. That process is a blackbox to me (closed source) which I cannot change. I know, however, how to decode that BLOB and transform ...
-1
votes
1answer
102 views

Automatically verifying INSERTs when building a PHP(5.3.3) application [closed]

I am building a form in PHP. I would like to automatically verify that INSERT queries are successful, and populate data correctly, as opposed to running queries in Workbench or MySQL with every code ...
5
votes
1answer
4k views

Architecture for a mobile (Android) chat application

I want to develop a chat application that reminds a bit whatsapp, I am doing it as a learning project. I am currently doing it on Android just because I am doing an Android course. The requirements ...
0
votes
1answer
163 views

Improve processing of data (and structure) from flat file to CMS Database

I have a flat file (CSV) that brings me the data I want, but it needs to be cleaned and processed before it can be used, so I built an intermediate Database (MySQL) in order to get the structure from ...
0
votes
1answer
304 views

RDBMS (MySQL) logic question. How to join multiple “FRIENDS”

so this is a logic question as to creating the proper relationships in a MySQL database. What logic would you choose for the following scenario? This is a back-end for an app where people can have ...
12
votes
7answers
947 views

500 databases or 1 database with 500 tables or just 1 table with all the records? [duplicate]

I currently have an application that is used by a single end customer. For ease of discussion assume the application only needs a single database table for all records. I now need to support ...
2
votes
1answer
220 views

Transferring information between a web server and a Python backend?

I have been Googling my problem but haven't been able to come up with anything; here's the situation: I have a PHP / MySQL website hosted with 1and1.com. I also have a Python program that runs on a ...
1
vote
2answers
177 views

How to minimize networking cost of distributed game database?

We've been working on a networked online game project which will run in near future and looking for a satisfying solution for our distributed game database. We didn't take networking costs into ...
0
votes
2answers
643 views

SaaS model, 1DB per client

The context we're building a web-based system and one of the design decisions (database related) was whether to have 1 main DB manage all client data VS having 1 DB per client. After reading a lot ...
1
vote
4answers
2k views

Notifications system with too many subscribers

In my application users can subscribe to other users, like in every social network out there. However I'm experiencing some trouble when a user has too many subscribers. Every time a user posts ...
0
votes
1answer
254 views

Act as MySQL server in Java/Android [closed]

Is it possible to act as a MySQL server in a Java or Android application, such that applications like HeidiSQL can connect to it? What I want to do is to write an application for Android which ...
0
votes
1answer
149 views

How to implement a Daily Recap email of Database records modified the previous day sent to Subscribed Users like Basecamp does?

I am building a Project Management module for SugarCRM. It consists of a "Project" which has information on the project like Name, description, start and completion dates, creator name, status ...
0
votes
1answer
175 views

Repurpose MySQL as a mutex

My application needs to perform an operation once every 10 minutes, but that operation is triggered many times more frequently. Occasionally it is triggered three or four times a second in different ...
0
votes
0answers
348 views

Best practice: dynamically handle variable data, multiple file uploads and encoding with jQuery, AJAX, PHP and MySQL

I'm currently writing an e-learing web-application. I'm sorry if this is information overkill but I think it's better to describe it in detail so you get the idea. I have made thought on every point ...
0
votes
0answers
181 views

embedding LEFT OUTER JOIN within INNER JOIN

I am having some problems with one of the question's answered in the book "SQL FOR MERE MORTALS". Here is the problem statement Here is the Database Structure Here is the answer which I am ...