ER Diagrams Tutorial | Complete Guide to ER Diagrams with Examples An Entity Relationship Diagram (ERD) is a visual representation of different data using conventions that describe how these data are related to each other. For example, the elements writer, novel, and consumer may be described using ER diagrams this way: ER diagram with basic objects In the diagram, the elements inside rectangles are called entities while the items inside diamonds denote the relationships between entities. ER Diagrams Usage While able to describe just about any system, ER diagrams are most often associated with complex databases that are used in software engineering and IT networks. ER diagram example with entity having attributes In the diagram, the information inside the oval shapes are attributes of a particular entity. History of ER Diagrams ER diagrams are visual tools that are used in the Entity-Relationship model initially proposed by Peter Chen in 1976 to create a uniform convention that considers both relational database and network views. Elements in ER diagrams 1.
Learning Python, Linux, Java, Ruby and more with Videos, Tutorials and Screencasts How to identify an unknown device (e.g. Wireless LAN module)? Sometimes you may have a problem, that there is an unknown device in your device manager. For example, if you make a clean installation of an operating system like Windows 7. In this document, we will describe, how to identify the unknown device, using the database on www.pcidatabase.com (This page is used in our example, but there may be any similar page you can use, too.) How to check, if the PC has any unknown device.Press the "Windows Key" and the "Break Key" on your Keyboard at the same time and the system window will open Click on "Device Manager" on the upper left of the page to open it.
for all your browser quirks Userscripts.org: Power-ups for your browser New Tab Page – show, hide and customize top sites When you create a new tab, Firefox shows your top sites to make getting where you want to go easier than ever. We'll show you how to pin sites to this page, rearrange the layout or even turn it off if you wish. Firefox displays websites on the new tab page based on how frequently you visit each site and how recently you were there. Pin a site Just click the pin icon in the top-left corner of the site to lock it in that position on the page. Add a site You can also open the bookmarks library and drag bookmarks to the new tab page. Click the Bookmarks button on the right side of the navigation toolbarOn the menu bar, click At the top of the Firefox window, click the menu and select to open the Library window. Remove a site Click the "X" in the top-right corner of the site to delete it from the page. Note: If you accidentally remove a site you can get it back by clicking Undo at the top of the page. Rearrange sites Click and drag a site into the position you want.
Free Online Tools For Developers - FreeFormatter.com Using Googles Full Capabilities. « XBOX, XBOX 360, PS2, PS3, PSP, & MORE! – Your source for the latest in console modding. Well most of you use Google to probably look up porn. Other just search stuff. And others use Google to hack. Using Google, and some finely crafted searches we can find a lot of interesting information. For Example we can find: Credit Card Numbers Passwords Software / MP3′s …… (and on and on and on) Presented below is just a sample of interesting searches that we can send to google to obtain info that some people might not want us having.. After you get a taste using some of these, try your own crafted searches to find info that you would be interested in. Try a few of these searches: intitle:”Index of” passwords modified allinurl:auth_user_file.txt “access denied for user” “using password” “A syntax error has occurred” filetype:ihtml allinurl: admin mdb “ORA-00921: unexpected end of SQL command” inurl:passlist.txt “Index of /backup” “Chatologica MetaSearch” “stack tracking:” “parent directory ” /appz/ -xxx -html -htm -php -shtml -opendivx -md5 -md5sums put this string in google search: ?
Regular Expressions Tutorial This article will give you an introduction to the world of regular expressions. I'll start off with explaining what regular expressions are and introduce their syntax, then some examples with varying complexity. Concept A regular expression is a text pattern consisting of a combination of alphanumeric characters and special characters known as metacharacters. A close relative is in fact the wildcard expression which are often used in file management. The pattern is used to match against text strings. You'll find that regular expressions are used in three different ways: Regular text match, search and replace and splitting. Regular expressions are often simply called regexps or RE, but for consistency I'll be referring to it with its full name. Due to the versatility of the regular expression it is widely used in text processing and parsing. Usage Now you're probably wondering why you should bother to learn regular expressions. Quantifiers or a number: Remember this, it's very important.
A Blog for TIBCO Architects, Developers, and Consultants Researched and written by Xmarter TIBCO Consultants Traditional deployment of business integration project requires a lot of configuration effort. The administrator needs to ensure that the configurations for multiple interactions are supported and configuration files are required for different components on different machines. TIBCO ActiveMatrix BusinessWorks, in contrast, provides an interface for creating deployment configuration and then deploying the project. To deploy TIBCO ActiveMatrix BusinessWorks Projects, TIBCO Administrator is used. All TIBCO BusinessWorks Projects undergo same project phase: design, deploy, and run. In using TIBCO Administrator GUI to deploy projects, an Enterprise Archive (EAR) file needs to be created using TIBCO Designer. TIBCO Administrator allows applications to be deployed multiple times. Once an application is deployed, TIBCO Administrator imports all the values defined for global variables from the EAR file.