| PLease give me answer of following questions? [message #359637] |
Mon, 17 November 2008 14:56  |
shptlucky
Messages: 3
Registered: November 2008
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Junior Member |
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I am begginer
1) As oracle is a database, but the data which we write or create must be store somewhere in computer? or retrieve from that place which must be secendory storage, my question is that is that data stored in some file??
2) What's .ORA file
3) Whatz host string?
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| Re: PLease give me answer of following questions? [message #359997 is a reply to message #359882] |
Wed, 19 November 2008 02:59  |
Frank
Messages: 7901
Registered: March 2000
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Senior Member |
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| shptlucky wrote on Tue, 18 November 2008 14:47 | Man my Internet speed is not so much to download the files online.....
just give me answers of above general
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A question in return:
Why do you want to know? Especially for the first two questions.
If you are such a beginner, there is no need to get stressed over these low-level issues; just let the database do its work and focus on understanding the higher levels.
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| Re: PLease give me answer of following questions? [message #360148 is a reply to message #360139] |
Wed, 19 November 2008 15:57 |
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Littlefoot
Messages: 21808
Registered: June 2005
Location: Croatia, Europe
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Senior Member
Account Moderator |
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| shptlucky | I want to learn ABC first ...
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Unfortunately, you don't want to hear what people keep saying to you. Concepts book is ABC. It will take some time to read it, but it will also answer many of your questions.
You have asked a few of them; here's a short answer:- Yes, you are right. Information stored in a database really have to be somewhere on the computer. How much do you know about computers? I guess we can agree that database is not stored in a keyboard, mouse pointing device, power supply or IDE hard disk cable. So, which part(s) of a computer are designed to store data?
Hard disk is by far the most usual storage device. Logically, on a reasonably high level, there are directories there which contain data files which contain data. Does this answer your first question?
- .ORA file is a file whose extension is ".ORA". Did you, actually, search for them? Can you name a few? I performed search while typing this message and found 37 .ORA files before I stopped it.
As there are, obviously, quite a lot .ORA files on a computer that runs an Oracle database, which one of them are you particularly interested in?
- Host string is piece of information which is required while connecting to an Oracle database. Credentials necessary to successfully do that are username, password and a host string. As far as the first two are self explanatory, the third one - host string - is in a close connection with one of the .ORA files from the previous question: a TNSNAMES.ORA file. It represents a database alias, a name of an Oracle instance you are connecting to. For example:
KC2110 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = kc2110)(PORT = 1521))
(CONNECT_DATA = (SID = kcora7))
)
> sqlplus scott/tiger@kc2110
Now that you've heard one interpretation of the "ABC", you could really start reading the Concepts book.
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