I'm trying to use a simple mysql database but tweak it so that every field is backed up up to an indefinite number of versions. The best way I can illustrate this is by replacing each and every field of every table with a stack of all the values this field has ever had (each of these values should be timestamped). I guess it's kind of like having customized version control for all my data..
Any ideas on how to do this?
Is there a cleaner way to do the following, assuming that I have a reason to keep the data sets independent?:
x = {1, 2, 3};
y = {1, 4, 9};
ListPlot[Partition[Riffle[x, y], 2]]
Thanks!
I've written a couple of c# forms applications which use a lot of the same data/objects which would better be combined. I realise I could use modal forms to launch each of these but where should I state .dll's and other resources, on the parent form? or on each other form where necessary?
Under WindowsCE, C++ project, I'd like to get CPU utilization and memory allocation data real time - for logging and troubleshooting. Is there a library or activeX available that i could include in my code and use [without bringing my process to a halt, preferably], anyone knows?
thanks much for any insight!
O.
Hi all,
In my app I need to lay some text which I'm getting from a parsed data. Currently I'm currently laying it in a label. The problem is there are going to be some html tags indicating an image [along with its url] and videos etc in that plaintext. What is a good way to handle this identifying images and videos tags and laying corresponding images and videos along with rest of the plaintext dynamically?
Thanx in advance.
hello,
anyone can plz help me? i wanted to create pdf file using php and have done it. now i want to create pdf file that get data from mysql table.. i've searched for the sample code for long time but didnt find even a single code related to my query.. thanx in advance
hi friends,
I am trying to insert data into particular table through pl/sql stored procedure,my requirement is while inserting i should generate PRIMARY KEY values for particular column and also i should return that PRIMARY KEY value to output and one more thing is that for another column i should validate my string such that it should contain only characters not integers.
please help me in writing code for the above requirement
Thanks and regards
thulasi policherla
If I have a requirement to create a data structure that has the following fields:
16-bit Size field
3-bit Version field
1-bit CRC field
How would I code this struct? I know the Size field would be an unsigned short type, but what about the other two fields?
How do you decide on which side you perform your data manipulation when you can either do it in the code or in the query ?
When you need to display a date in a specific format for example. Do you retrieve the desired format directly in the sql query or you retrieve the date then format it through the code ?
What helps you to decide : performance, best practice, preference in SQL vs the code language, complexity of the task... ?
I have created a database model in Visio Professional (2003). I know that the Enterprise version has the ability to create a DB in Sql Server based on the data in Visio. I do not have the option to install Enterprise. Aside from going through the entire thing one table and relationship at a time and creating the whole database from scratch, by hand, can anyone recommend any tool/utility/method for converting the visio database model into a Sql Script that can be used to create a new DB in Sql Server?
Hi All,
I have a problem in my project.I want to implement Tab bar function under a drop down selection and when once tab bar is clicked it has to be navigated to a data grid.Can any body suggest me the proper direction to implement it.
Thanks,
Brenda
Using MATLAB I filtered a very noisy m x n array with a low-pass Gaussian filter, cleaned it up pretty well but still not well enough to analyze my data. What would the next step be? I'm thinking that signal enhancement, but am not sure how to go about this.
I'm looking for a simple database admin tool that will allow non-technical users to perform data-entry into a database (imagine a striped down version of phpMyAdmin). It would preferably allow the developer to set restrictions on which tables and fields can be modified.
Is there a way to import data from a JSON file into R? More specifically, the file is an array of JSON objects with string fields, objects, and arrays. The RJSON Package isn't very clear on how to deal with this http://cran.r-project.org/web/packages/rjson/rjson.pdf.
I'm using a datagridview in C# WinForms, with data from a Sybase database, and characters are not showing correctly. This is what I see:
Do you know how can I fix this?
How can i catch https data(for example email) from browser before they are encrypted with ssl and send to the network? does anyone have idea?
I am looking for programmatical solution. How it works. I am not looking for any program,want to make my own.
Thx.
I am reading the Head First PHP/Mysql book and they say to store both the user's username, email into cookies and sessions. Is it safe to assume that everyone nowadays accepts cookies? Or should I store both in sessions and cookies?
I am not storing any sensitive data in cookies such as password, etc.
I'm looking for a easy way to post data to webpages while keeping the cookies. for example you login to somewhere, and later you do some new actions.
What's the easiest way to do that?
I have some data in db,now i m making them to display in the front end so,i ii have a update button,if i click it the selected values to come to database
http://dpaste.com/hold/180761/
Thnx in advance.
Hi,
I would like to know which type of persistent store would be most appropriate in what situations, like how can I decide where to use core data, property list or archives for my iPhone application.
Thanks
Today i listened a lecture about fenwick trees (binary indexed trees) and the teacher says than this tree is a generalization of interval and segment trees, but my implementations of this three data structures are different.
Is this afirmation true? and Why?