Knowledge Sharing

BASIC SHORTCUT KEYS Alt + F File menu options in current program Alt + E Edit options in current program F1 Universal help (for all programs) Ctrl + A Select all text Ctrl + X Cut selected item Shift + Del Cut selected item Ctrl + C Copy selected item Ctrl + Ins Copy selected item Ctrl + V Paste Shift + Ins Paste Home Go to beginning of current line Ctrl + Home Go to beginning of document End Go to end of current line Ctrl + End Go to end of document Shift + Home Highlight from current position to beginning of line Shift + End Highlight from current position to end of line Ctrl + f Move one word to the left at a time Ctrl + g Move one word to the right at a time MICROSOFT® WINDOWS® SHORTCUT KEYS Alt + Tab Switch between open applications Alt + Shift + Tab Switch backwards between open applications Alt + Print Screen Create screen shot for current program Ctrl + Alt + Del Reboot/Windows® task manager Ctrl + Esc Bring up start menu Alt + Esc Switch between a...

Software testing is as old as the hills in the history of digital computers. The testing of software is an important means of assessing the software to determine its quality. Since testing typically consumes 40~50% of development efforts, and consumes more effort for systems that require higher levels of reliability, it is a significant part of the software engineering. With the development of Fourth generation languages (4GL), which speeds up the implementation process, the proportion of time devoted to testing increased. As the amount of maintenance and upgrade of existing systems grow, significant amount of testing will also be needed to verify systems after changes are made [12]. Despite advances in formal methods and verification techniques, a system still needs to be tested before it is used. Testing remains the truly effective means to assure the quality of a software system of non-trivial complexity [13], as well as one of the most intricate and least understood areas...

Multiple Column search of mysql database using PHP For multiple column search in mysql. you first need to index the table using the query ALTER TABLE list ADD FULLTEXT (column1,column2,...and so on) then just use the MATCH in either PHPMYADMIN or directly through PHP, I am writing the below code for PHPMYADMIN SELECT column1, column2 , MATCH ( column1, column2 ) AGAINST ( 'Search Term1 OR Search Term1 ' ) FROM table_name WHERE MATCH ( column1, column2 ) AGAINST ( 'Search Term1 OR Search Term1 ' ) LIMIT 0 , 30  NJOY !!

Encryption has become a part and parcel of our lives and we have accepted the fact that data is going to encrypted and decrypted at various stages. However, there is not a single encryption algorithm followed everywhere. There are a number of algorithms existing, and I feel there is a need to understand how they work.  So this text explains a number of popular encryption algorithms and makes you look at them as mathematical formulas. Data Encryption Standard or DES The U.S government in 1977 adopted the Data Encryption Standard (DES) algorithm. According to it’s developer the DES algorithm is: “ It is a block cipher system which transforms 64-bit data blocks under a 56-bit secret key under a 56-bit secret key, by means of permutation and substitution.” Now, this tutorial will guide you through the various steps of the DES encryption algorithm making you more confident in dealing with DES encryption. The following is a step by step guide to the DES algorithm, which was original...