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

learn more… | top users | synonyms

-3
votes
0answers
27 views

What is the best framework to develop an Android app that connects to an existing MySQL database through a web service? [on hold]

I have experience developing Android apps using both Eclipse (Java) and Xamarin (C#). I have never tried connecting my apps to a database until now. It sounds like I need to use Android tools to call ...
0
votes
0answers
52 views

MySQL Database design - Opinions

Im working on a web Application for our bussiness with my brother. Our application its pretty simple, will be develop with php and mysql. Clients and providers ABMs Articles Inventory (we do not ...
0
votes
1answer
64 views

How can I cancel all running mysql queries in a web application?

I am running a web application which has to scan (mysql query on a particular column) a huge MySQL table, which has over 100,000 records. The problem I find that when a user requests another page ...
-1
votes
0answers
28 views

Database/Storage engine for a project involving heavy inserts? [closed]

I am looking into a project which involves large number of inserts daily.I will have a list of user's (for example a user set of 500k ) , for which I need to monitor daily certain activities ...
0
votes
1answer
42 views

Should I persist notification before or after publishing it through Redis pub/sub?

I'm implementing a mechanism to notify a group of users about newly inserted blog comments. The architecture uses the Redis Pub/Sub mechanism. By definition, the pub/sub mechanism aims to propagate ...
0
votes
0answers
15 views

Best approach for storing banking information [migrated]

I am currently developing an auction desktop application. At the moment I am storing the buyer and vendor information in 2 separate tables within a MySQL Database. Currently the data for these tables ...
0
votes
1answer
22 views

Store Arbitrary values related to mysql record

I have created an app that manages a Data cleansing workflow. Each row imported needs to store an arbitrary number of key value pairs in addition to our standard mysql schema. The key values need to ...
-1
votes
1answer
79 views

Cloud Newbie … what should I know while creating my App [closed]

I never developed for the Cloud, and to tell you the truth I am not fully 100% sure of what Cloud is when coming down to servers and services. I am starting to develop an App where I will need to be ...
0
votes
0answers
79 views

A kind of actions handler on my PHP project? [migrated]

I wanted to do something like actions handler. I don't know how it should look like. But I started to make something like that: MySQL: CREATE TABLE `handlers` ( `name` varchar(65) NOT NULL default ...
-3
votes
0answers
19 views

How to input data into user defined variables into MySql query [migrated]

Simple Shell script echo "Enter 1 for month of March" echo "Enter 2 for month of April" echo "Enter 3 for month of May" read Month case "$Month" in 1) echo "enter establishment name" ...
0
votes
1answer
133 views

Face Recognition(OpenCV) with MySQL and PHP

First of all I have asked this question on stackoverflow and got down vote for question being not belonging to the site. I am trying my luck se now(more suitable to se I guess) and I hope I will not ...
0
votes
0answers
21 views

What are the memory-management capabilities of MySQL + JDBC (in light of autonomic computing)?

I'm interested in implementing some kind of autonomic-computing functionality using MySQL. By autonomic-computing I mean roughly some failsafe abilities, whereby the application appears to be at least ...
0
votes
0answers
73 views

Penny auction concept and how the timer works

I am creating a penny auction site using PHP yii framework. The main consideration of the system is to update the database records of all active auctions (max 15 auctions) with the current ticker ...
0
votes
1answer
111 views

Inserting data to database from Android

I have to build an application where the requirement is that my clients will send data from their Android device and I have to save that data to a database. I have done the part of coding that ...
27
votes
4answers
4k views

Is backing up a MySQL database in Git a good idea?

I am trying to improve the backup situation for my application. I have a Django application and MySQL database. I read an article suggesting backing up the database in Git. On the one hand I like ...
0
votes
0answers
27 views

Track time spent on site

We are going to track user engagement (i.e. time spent on site, most viewed part/page of the system, etc). I don't see Google Analytics / MixPanel being able to do this, since we have to analyze ...
0
votes
4answers
699 views

How to insert/update a large amount of data into mysql using php

I have an excel sheet which has a large amount of data. I am using php to insert the data into mysql server. I have two problems 1) I have to update a row if the id already exists, else insert the ...
0
votes
2answers
96 views

Should all foreign table references use foreign key constraints

Closely related to: Foreign key restrictions -> yes or no? I asked a question on SO and it led me to ask this here. If I'm faced with a choice of having a circular reference or just not enforcing ...
-3
votes
3answers
446 views

How to not let anyone inspect elements of a webpage?

I was thinking to make some jQuery functions that will use ajax to control mysql. The whole idea is to make separate files of PHP (e.g query.php, addRow.php, update.php and delete.php) provide data to ...
0
votes
2answers
187 views

Large MySQL Batch Inserts From PHP: Run insert from script, or save as SQL file?

We have a large dataset that's current residing in many, many spreadsheets. I've been tasked with getting part of that data into our MySQL DB. When all is said and done, I will probably be inserting ...
0
votes
1answer
106 views

Commercial use for embedded system

I am developing a embedded system (computer + os + programs) to sell it to a company. I am confused about the licensing and the softwares I wanted to use to develop the system.So I want to know if I ...
0
votes
2answers
124 views

When do you use subquery in SQL? [closed]

When do you use subquery in SQL, and what type of request is subquery useful for? I am practicing SQL and need to know how to spot a subquery problem immediately
1
vote
1answer
71 views

Loosely compare user input with database record [closed]

I have a database table with 3 columns; id, question and answer. On the front-end, I have a PHP application that shows questions to the user. The application would then compare the user input with the ...
82
votes
10answers
10k views

Why is “Select * from table” considered bad practice

Yesterday I was discussing with a "hobby" programmer (I myself am a professional programmer). We came across some of his work, and he said he always queries all columns in his database (even on/in ...
0
votes
1answer
182 views

Why doesn't MySQL have an explicit “No Limit” option for queries?

I use SQLyog Community edition and like many other SQL applications out there it puts a 1000 result limit on queries that do not have a limit provided. I am wondering why MySQL doesn't have an ...
3
votes
1answer
127 views

Should a stored proc try to do more, in the attempt to avoid php mysql back and forth overhead

I have a REST architecture, running PHP on the server side which store and query a Mysql database. I am re-evaluating one architecture design decision: DECISION to re-evaluate: In an attempt to ...
0
votes
1answer
65 views

DB Design: How to link a single column to a collection of entities

I have a db design question that I am sure has been quite extensively covered but I cannot find a good answer already. The problem is how to efficiently link a single school course to a collection ...
2
votes
5answers
280 views

Create Database To Fit Data vs Make Data Fit The Database

I'm newish to programming and would like to know what people have found to be the most supportable option or rather what people find more understandable. I'm the only one writing code at my firm, but ...
0
votes
2answers
189 views

mysql, store a single piece of data per row

I am preparing to write a database system using PHP and MYSQL which will store every piece of info sent to it as an individual row. Each row will store several piece of meta data (time stamp, who ...
0
votes
2answers
146 views

Examples of designing a database that handles point tracking?

I'm attempting to expand my knowledge of how database designs and concepts work. I'm working on a hobby web/mobile app for practice that will challenge me. However, I am running into an issue. What ...
0
votes
0answers
237 views

Looking for changes in a MySQL database with node.js for a live dashboard

So, I work for a NOC in a small ISP. We're planning on getting a large wall mounted monitor and I'd like to make a dashboard in Node.JS - I've never used node before so it should be interesting. I'm ...
0
votes
1answer
95 views

Database design grouping many tables with their common fields [closed]

Is this a valid DB design? A user can create an organization, link as many offices to it, have an inventories that host items linked to organization or office, have clients for his business etc. | ...
1
vote
3answers
96 views

Select custom output formats from database with SQL

I am planning to make a simple rest service application, and I am currently deciding the architecture. I have decided that I want to write the middle layer in multiple languages, so that it is easy to ...
4
votes
3answers
225 views

OOP and relational databases [duplicate]

I see a lot of talk in the OOP world about principles and laws such as Open/Close and Loose Coupling, I can understand how they are so high valued, However I seem to have ran into a problem with ...
0
votes
2answers
333 views

How do programs like JAVA and C++ store variables in a database , does it still use MySQL like in PHP? [closed]

I imagine they have to have some sort of query to goes to a database , or maybe I'm wrong and they can just store it to their computer? Is MySQL for server - side scripting only?
0
votes
1answer
49 views

Building a site with internalization support

When a user browses some page and then switches a language, then the following actions should occur: If there's a translation for a page he's browsing now, then do redirect to that page. If there's ...
0
votes
2answers
57 views

Store the result of a complex but frequent database query, in another temp persisting table

I have a slightly complex SELECT query which uses a number of JOINs and variables inside it and the query is run frequently throughout the application. The result varies when one column is updated. ...
3
votes
3answers
391 views

Is it better to use a switch statement or database to look through 5,000 to 10,000 instances?

I have some JSON data in this format (5,000 instances for now): {"id":"123456","icon":"icon.png","caseName":"name of case"} I am allowing the user to search for the name of the case and then return ...
0
votes
2answers
270 views

“Match Making” script, a way without involving the database and php?

I am writing a matchmaking script for a game through a web portal. For the past few days I have been looking into the different options and I believe the following approach would be the most optimal ...
16
votes
7answers
2k views

Is saving SQL statements in a table for executing later a bad idea?

Is saving SQL statements in a MySQL table for executing later a bad idea? The SQL statements will be ready for execution, i.e. there will be no parameters to swap or anything, for example DELETE FROM ...
13
votes
4answers
813 views

What to do when your company doesn't encrypt passwords

Background I'm been contracted to help a company maintain their server. I work on some minor PHP projects but also look over performance issues and recently, scan logs for hackers. These guys have ...
2
votes
1answer
115 views

What design route should I take?

So I've taken on a project at work that I'm having a hard time attacking, and I'd love some feedback and suggestions. I work for an online retail store where we have an old, +7k-line script that we ...
0
votes
1answer
107 views

Comment system sorting madness

I have a website in which I'm loading all of the users' comments by the number of likes they have. This has caused me some troubles. Let's say comment #1 has 5 likes, comment #2 has 2 likes, and the ...
66
votes
15answers
15k views

Why should passwords be encrypted if they are being stored in a secure database?

I have a web service. Right now, I have passwords stored in plain text in a MySQL table on my server. I know this isn't the best practice, and that is why I am working on it. Why should passwords be ...
3
votes
4answers
467 views

When should a database table use timestamps?

First a note, I thought maybe this question belonged in the database exchange, but I think it is more broadly related to a programming solution as a whole than to databases. Will move to database ...
0
votes
0answers
32 views

MySQL left join + performance

SELECT * #Case 1 cp.* #Case 2 FROM crawl_page AS cp LEFT JOIN artist AS a ON cp.cpURL LIKE ...
-1
votes
2answers
141 views

How to fit requirements into MVC

Let's say we have a website requirement to allow User functionality. Simple! We create the UserModel, UserController and UserView. Works perfectly. However, let's assume that User has a many-to-one ...
0
votes
1answer
744 views

MySQL PHP User/Group Permissions

I am trying to configure a mysql database table that I can use as a per user/group permissions table. Almost like what Facebook has, for a local company intranet site. What is the best possible way ...
0
votes
1answer
892 views

Practical mysql schema advice for eCommerce store - Products & Attributes

I am currently planning my first eCommerce application (mySQL & Laravel Framework). I have various products, which all have different attributes. Describing products very simply, Some will have a ...
0
votes
3answers
490 views

Unique and primary keys on a database (mysql)

I'm having quite some doubts here... If I have a table related to username/password login how can I assure there won't be any more matches of the same username and password in the same table using ...