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    <p>A cookie is simply a short text string that is sent back and forth between the client and the server. You could store <code>name=bob; password=asdfas</code> in a cookie and send that back and forth to identify the client on the server side. You could think of this as carrying on an exchange with a bank teller who has no short term memory, and needs you to identify yourself for each and every transaction. Of course using a cookie to store this kind information is horrible insecure. Cookies are also limited in size.</p> <p>Now, when the bank teller knows about his/her memory problem, He/She can write down your information on a piece of paper and assign you a short id number. Then, instead of giving your account number and driver's license for each transaction, you can just say "I'm client 12"</p> <p>Translating that to Web Servers: The server will store the pertinent information in the session object, and create a session ID which it will send back to the client in a cookie. When the client sends back the cookie, the server can simply look up the session object using the ID. So, if you delete the cookie, the session will be lost.</p> <p>One other alternative is for the server to use URL rewriting to exchange the session id.</p> <p>Suppose you had a link - <code>www.myserver.com/myApp.jsp</code> You could go through the page and rewrite every URL as <code>www.myserver.com/myApp.jsp?sessionID=asdf</code> or even <code>www.myserver.com/asdf/myApp.jsp</code> and exchange the identifier that way. This technique is handled by the web application container and is usually turned on by setting the configuration to use cookieless sessions.</p>
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    1. PODifferences between cookies and sessions?
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    1. USChris Cudmore
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    1. COThis is a wonderful explanation anchored in a great real-world analogy. This answer should be upvoted way more. Very accessible to newbies who are those most likely to ask such a question.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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