We know that DBMS harness many technique to ensure the data integrity and satisfying the ACID properties when there are many transactions running simultaneously in a concurrency environment. Apart from setting Isolation Level, what other means taken by DBMS to ensure data integrity? what is the relationship between these technique? Could...
For example on a high traffic web server. To reduce problems when switching a file I usually rename the old file out and then rename in the new file. I was told some time ago that renaming a file does not change the 'inode data' so that processes reading the file can keep doing so without glitches. And, of course, rather than copying i...
Hi there I got a question about the behavior of lookup fields when importing data. I wonder how the lookup fields behave when the list they point to is being replaced/imported. To explain the issue, I will provide a quick example below: As example, assume we have these two sharepoint lists: Product Types ------------- + Type Name + Co...
I'm hoping maybe someone has a quick answer for this but essentially when I turn on optimizations, I get the following error: [elxr] (error) small data area overflow: 0xfff9f6fc (signed) didn't fit in 16 bits while performing relocation in file test_main.o at location sti_13_test_main_cpp_252229d3+0xc, to reference sym...
Hi everyone, I have seen a feature in different web applications including Wordpress (not sure?) that warns a user if he/she opens an article/post/page/whatever from the database, while someone else is editing the same data simultaneously. I would like to implement the same feature in my own application and I have given this a bit of t...
i have a class named cv,and a class named university, and each user that completes his cv, should choose a University he studyes at. My problem is: one student can study at one or 2 or three universities, or may be a user that is not student. I need to take this data into a form, and i use ModelForm. The data from the Cv class, and fr...
Hello I want to create process with low integrity level from process with medium integrity level. I found msdn example: Designing Applications to Run at a Low Integrity Level But it does not work on my system. Process is created successfully, but message box "Alpplication failed to initialized properly(0xC0000022 -- STATUS_ACCESS_DE...
I have modified my application, so that when a new user is registered, it's username and email are the same. But when a new user is created, I'm getting IntegrityError : (1062, "Duplicate entry '[email protected]' for key 'username'"), still the user is created correctly. Function register_new in which a new user is created ('temp_data' is a ...
Can functions such as Min() or Max() possibly destroy the integrity of a record? Take the case of the query I recently crafted: SELECT account, MIN(phone), MIN(chargeid), MIN(locationid) FROM import1 GROUP BY account, phone is there any chance I am mixing my field data into a new record unintentionally? What if I changed one Min to a M...
Hello, here is my problem : I have a mobile app, and I want to give the user some information depending on their position ( think something like FourSquare ). But how to make sure the user position is real ? I mean let's say the client uses a request to the server via http : http://www.myserver.com/getdata?lat=X&long=Y ...
Hi, I have a tool which reads a CSV file, selects from it using HSQLDB, and saves the result as another CSV file. More here: http://ondra.zizka.cz/stranky/programovani/java/apps/CsvCruncher-csv-manipulation-sql.texy Now when I used it for some task, I have got: java -jar CsvCruncher-1.0.jar result.csv foo.csv 'SELECT * FROM indata' I...
To build a secure system can we assume my question before starting programming. Both in symmetric and public-key encryption, is my question well-proofed ? If no, what are the vulnerabilities, can you give an example? ...
I'm having a project which compiles perfectly with gcc, but fails to compile under Greenhills Integrity environment. The problem boils down to this three files: MyVector.cpp // contains function testVector MyVector.hpp // contains template vector<> SomeFile.cpp MyVector.hpp contains template-class for a vector, and MyVector.cpp conta...
I installed integrity app these days. and found some issues. I follow this. $ gem install bundler $ git clone git://github.com/integrity/integrity $ cd integrity $ git checkout -b deploy v22 $ bundle install $ bundle lock $ rake db at the end steps, I can't find and folders named ".bundle" in the integrity folder. an...
Hi, I'm trying to setup integrity for my project. Sadly, my bash-fu is poor so I need some help. In build script I enter rake spec. In integrity it returns status 0 and output (in /home/rails/integrity/builds/builds/66) but I know, that I should got status 1 and output (after running it manually from console): rails@integrity:...
Looking for a command line tool for Windows / linux environment that can check a PDF file for any errors (not for repairing). ...