Understanding library concept

Can anyone refer me to a book covering the Library concept? I was a highly organized PC user with file structures on an external drive (both original and backup) that I accessed from 3 PCs/laptops on my home wireless network. I could find a file by getting to the directory. I copied all my files over to my recently purchased iMac and Mac formatted external drive and now I have tons of duplicate images, audio and video files on my admin Mac logon and my Mac user logon. I can't seem to grasp the concept of libraries. Is the mac os importing the actual files into a library or is it creating a link to the actual files when I open itunes and iphoto?? I have discovered the "option" to select the external or user library and enabled the "share" function but that isn't helping to cross manage all the files. Eventually I would like to find EVERYTHING, eliminate duplicates and then back them up again. But I need first to understand what a library is and how it differs from the PC directories. If I try using Finder to get to a Library, I just hit a dead end, no actual files are displayed. A book or web link to explain this concept would be most helpful. Thanks, Sandi MacD

Both iTunes and iPhoto give you the option of what to do with files added to the libraries. You'll find that in Itunes/iPhoto>Preferences>Advanced.
I've always added files to the apps' library. Easier to backup the whole library folder.
A basic difference is that Mac applications are menu driven (do everything from the options in the program) compared to the directories driven world of Windows. It takes some effort to break old habits.
A warning for Mac converts. Don't mess around inside the applications library folders. They are kept a special way. Changes inside the library folder through the finder are sure to cause problems or disaster.
Just try to do your organizing working in the application.
I can't give you a specific book, but the Missing Manual series is sure to have what you need.

Similar Messages

EHP Upgrade - Trying to understand the concept

Dear experts, this is an effort to understand the concept. I have been doing Basis work for the past 10 years approximately. All along, I have been doing the typical LCP and SP upgrades way back from legacy systems until now (ECC 5.0 / BW 3.5). We have recently upgraded our BW 3.5 to BI 7.01 and also created a dual stack (we never had Java stack before for BW). This is my situation. Below are my questions. Any guidance would be highly appreciated.
1. Do we still have the SP Stack upgrades within Ehp 1? Or, has it been revamped completely and there is no more SP upgrades and we only need to do EhP upgrades? In this case, if I have to upgrade from Netweaver 7.01, is my only option upgrading to 7.02?
2. Is there a place where I can start to catchup with the whole EhP concept? I would like to know the maintenance life cycle and the impact on our environment.
3. Are there any specific upgrade guides that will guide me in transitioning from the typical SP upgrade methodology to EhP upgrade methodology. Also, I would like to know how did you transition (learning curve) from someone who had been with typical SP upgrade for a long time and how did you adopt yourself to the new path (like what guides did you use, what links did you follow, etc)
NOTE: I have heard the EhP upgrades are similar to release upgrades and I have done handful of release upgrades.
Thank you so much in advance.

>1. Do we still have the SP Stack upgrades within Ehp 1? Or, has it been revamped completely and there is no more SP upgrades and we only need to do EhP upgrades? In this case, if I have to upgrade from Netweaver 7.01, is my only option upgrading to 7.02?
Yes we do have both option available. Either we can go for SP upgrade or we can go with EHP upgrade.
>2. Is there a place where I can start to catchup with the whole EhP concept? I would like to know the maintenance life cycle and the impact on our environment.
Yes. http://Service.sap.com/erp-ehp is the place where you can get all the infromation and document.
>3. Are there any specific upgrade guides that will guide me in transitioning from the typical SP upgrade methodology to EhP upgrade methodology. Also, I would like to know how did you transition (learning curve) from someone who had been with typical SP upgrade for a long time and how did you adopt yourself to the new path (like what guides did you use, what links did you follow, etc)
Everything is available on Service marketplace.
Regards,
Subhash

Unable to understand the concept of Primary Key in EJB

hi,
please help me in understanding the concept of Primary Key.
For each and every entity bean represents a data base row. i think it is correct. if multiple users are accessing the same data base row, there will be different primary key for each and every client. is it correct or not. can we say this as "concurrency"?. if all the clients are manipulating the bean, who manages it either application server or data base server?. why does we must implement both hashCode() and equals() methods?. Provide me the links where i can find the answers.

if multiple users are
accessing the same data base row, there will be
different primary key for each and every client.This is incorrect: the PrimaryKey is the unique identifier for each database row. It has nothing to do with users. In order for CMP to work, the container must be able to operate with a single row in the database and be able to distinquish between them.
If your CMP->database table already has one column that's unique, then you declare that CMP field to be <primary-key-field>. If you have more than one column that makes a row unique, you must make your own primary key object. The way the container can tell the difference between these primary key objects is to compare them, therefore the hashCode and equals methods.
Provide me the links where i can find the
answers.This is all discusssed in the J2EE Tutorial.

Help needed in understanding the concept of hierarchical queries

I really need help in this matter. I have a flafile containing about 4000 rows. It is from my supplier, it's structure is as follows:
create table Flatfile
(Pgroup varchar2(30),
Pclass varchar2(30),
Manufacturer varchar2(30),
Article varchar2(30),
Price Number(6,2));
Insert into Flatfile Values
('Application Software','Database Software','Oracle','Oracle 10G',115);
Insert into Flatfile Values
('Application Software','Database Software','Microsoft','MS SQL Server 2000',200);
Insert into Flatfile Values
('Application Software','Spreadsheet Software','Microsoft','Excel',100);
Insert into Flatfile Values
('Monitor','15"','Acer','Acer 15"" TFT superscreen',199);
Insert into Flatfile Values
('Monitor','15"','Sony','Sony R1500 flat',225);
Insert into Flatfile Values
('Monitor','17"','Philips','Philips Flatscreen',250);
Insert into Flatfile Values
('Monitor','19"','Viewsonic','Viewsonic PLasma Monitor',275);
Insert into Flatfile Values
('Processor','AMD','AMD','FX-55',600);
Insert into Flatfile Values
('Processor','Intel','Intel','P4 3 GHZ',399);
My goal is to make a hierarchical query with the start with and connect by clauses. From what I have read is that I need to normalize the data of the flatfile.
How do I achieve a table which I can query so that the query will represent the hierarchy that exists. Namely
Pgroup
++Pclasse
Application Software
++Database Software
++Spreadsheet Software
So a 2-level hierarchy. I'd like to understand this simple concept first. I built on the knowledge that I gain. So the questions are:
1.What do I need to do to make the table so that I can use a hierarchical query on it?
2. How should the query syntax be?
3. Is it also possible to get the data in the hierarchical query sorted asec?
I would only like to use the simple structures of the start with and connect by clauses first. I've read there are some new additions to 10G. The problem with the examples used by the tutorials is that the tables are already made so that they are suitable for hierarchical queries. I hope to understand it by this example. And take it a step further.
Sincerely,
Pete

Primarily hierarchy query serves to process tree-like structures which RDBMS simulates using through parent-child relation, often in a single table (see famoust
EMP table where employee can have the manager who is an employee at the same time).
In your case it could look like:
SQL> select pgroup, pclass from flatfile;
PGROUP                         PCLASS
Application Software           Database Software
Application Software           Database Software
Application Software           Spreadsheet Software
Monitor                        15"
Monitor                        15"
Monitor                        17"
Monitor                        19"
Processor                      AMD
Processor                      Intel
                               Application Software
                               Monitor
                               Processor
12 rows selected.
SQL> select decode(level,1,pclass,' ' || pclass), Manufacturer from flatfile
2 start with pgroup is null
3 connect by prior pclass = pgroup
4 /
DECODE(LEVEL,1,PCLASS,''||PCLASS MANUFACTURER
Application Software
Database Software              Oracle
Database Software              Microsoft
Spreadsheet Software           Microsoft
Monitor
15"                            Acer
15"                            Sony
17"                            Philips
19"                            Viewsonic
Processor
AMD                            AMD
Intel                          Intel
12 rows selected.The hierarchy syntax is described completely in the documentation including
LEVEL and PRIOR keywords.
As for the ordering question you can use siblings ordering:
SQL> select decode(level,1,pclass,' ' || pclass), Manufacturer from flatfile
2 start with pgroup is null
3 connect by prior pclass = pgroup
4 order siblings by 1 desc
5 /
DECODE(LEVEL,1,PCLASS,''||PCLASS MANUFACTURER
Processor
Intel                          Intel
AMD                            AMD
Monitor
19"                            Viewsonic
17"                            Philips
15"                            Acer
15"                            Sony
Application Software
Spreadsheet Software           Microsoft
Database Software              Oracle
Database Software              Microsoft
12 rows selected.Rgds.

Trying to understand library management with Premiere

So, I think I'm missing the forest for the trees here but I appreciate the help.
I'm migrating from FCPX to Premiere Pro. I am used to the idea of a library with my videos that I can categorize, tag and prune. This library is not part of any project but when I make projects I can draw upon it.
Now I want to take all my clips and organize them in "the premiere way" whatever that is. But When I open prelude it wants me to make a project. I'm not sure what for as I'm not planning any particular cut right now. All I want is to organize and view my clips and generally rebuild my library.
How should I do this? Or should I just forget this concept, make some folders with my clips on an HD and then wait until i'm making a video of some sort?
Thanks!
Jordan

Coming from a pro stills background, we've got 'archives' here of thousands of images. Catalogued & etc. some, older ones sadly stored but not catalogued. So I know what you're wanting ... a decently searchable & usable library of visual assets, grab what you want for any project.
Um ... though Adobe's made Lightroom into a nearly decent Digital Asset Management program, and supposedly Prelude is the rough equivalent video-wise, they've not actually made it into a DAM program. For some weird reason I cannot fathom. I've had contact with staffers through the Prelude forum, and they're very interested in hearing ideas on DAM set-up for their program, note they probably should have taken that into heart when starting the initial design, continue by noting that actually making it DAM-sort-of would involve a major change in several areas of code design ... and suggest I put in the ol' feature-request forms. Which I have.
So at the moment the 'best' cataloging program for Adobe is ... Lr ... which has some ability to look at & read video files, almost no ability to do much with them, but some ability to track & catalog 'em.
Not the ideal situation I'd like ... to be very, very polite & understated. Which of course, I always am ...

Want to understand SID concept...

Hello experts,
why not using the value like e. g. customer number directly in the dimension table instead of a SID? So I also could save one table (SID table) and with this on JOIN by linking directly to the master data tables (text, attributes, hierarchies) using customer no. as key.
Am I wrong? Is it only because of this INT4 thing with the SIDs whitch maybe results in better performance?
What I maybe understand is compounding, it seems to be hard to make here a connection to the right master data table. But if I wouldn't have this case, why else could be this SID useful?
Best regards,
Peter

Hello Siggi,
thank you for your answer and the linke you provided. I think star schema concept and using surrogate ID's for dimension tables is absolute clear for me and I see the advantage there.
How I said, faster DB access using INT4 values instead of characters is also a point I understand. On the other side SAP BW offers you to use a line item dimension which saves a join and result in a better performance.
But why not give the BW developers the chance to decide if you want use it? If your InfoObject is a numeric one, you are may be much faster, saving a join and having an even easier to handle value.
What I am interested in is, if SID technology is so deeply part of SAP BW, for example if you want to report on an DSO you also need SID's, what is the real advantage usind SID's every time for access of InfoCube or DSO data?
See, i read for example the following advantages of BW star schema on [this site|http://learnmysap.com/sap-bw/138-classic-and-sap-bw-star-schema-comparisons.html]:
-> Faster access to data than via long alpha-numeric keys. SAP BW use automatically generated INT4 keys for SID and Dimension ID
-> Can model in easy way: Historizing, multi-lingual, and shared dimensions. It is happen because of the excavation of master data from the dimension tables using the SID technique.
-> The query performance is improved here as aggregated key figures can be stored in their own fact tables.
OK, first point about INT4-keys we discussed.
I completly don't understand the second point and why therefore SID's are needed.
Third point depends on disadvantages of the classical star schema compared to bw aggregates, a point I understand
Often I read: The SID table provides the link between the master data and the dimension tables. (like here: /people/githen.ronney3/blog/2008/02/13/modeling-strategies)
But why shouldn't this be possible just with the key value?
Even SAP just describes his enhanced star schema without SID's, but technically SID's are used. Why not use it like SAP itself describes here:
http://help.sap.com/saphelp_nw70ehp1/helpdata/en/4c/89dc37c7f2d67ae10000009b38f889/content.htm
regards,
Peter

Object Library Concept in Report ???

Hi Friends
Is anybody aware of any concept in Report, similar to object library in forms.
1.Field's font, color, size etc.
2.Common Header and Footer information in many reports
Sudhanshu

the answer is no. However, there is a separate project that supports just that: http://wrapper.tanukisoftware.org. In particular, take a look at this page: http://wrapper.tanukisoftware.org/doc/english/prop-java-classpath-n.html
hope this helps

Help understanding Library norm files

Can someone please explain how the library files work. I am having some difficulty understanding how to correct a problem of how to deal with very slow file sets when I want to change from the General set (say) to Corporate or Wedding.
I am using Encore DVD 2.0, Windows XP (SP2) and have a Pentium 4 3GHz.
I looked through the forum and saw a post about changing the norm files in the Docs and Settings/etc/Library files (for the problem I am having with slow files and crashing) and when I checked I only have norm files in General, Technology and Travel. When I try to change to Corporate or Wedding in Encore the program just stops running and I have to close it in the Task Manager.
I am not sure if this is relevant - I live in the UK and originally set up Encore to work in PAL. I am working through Classroom In a Book which has all its files in NTSC - so I am setting up all my projects in NTSC for the book. I notice that there are two sets of library files in Program Files - PAL and NTSC - is this of any relevance and is this why I am having problems?
Mike

I think I've worked it out now, thanks.
I deleted all the .norm files (with Encore closed) and then closed the PC down completely and started over. With Encore open again I then systematically clicked on each library set and - like magic all the .norm files came back.
I assume the .norm files are created when you first click on the library set and then forever after they are there - something must have gone wrong somewhere because originally they were working fine. Now they are working fine again.
Now my only question is - if I have created a bunch of .norm files when working in a NTSC project - will they still work fine in a PAL project or will I have to recreate them?

I need help understanding the concept of Java...

Hello, this is my first post. I'm new to Java as well as programming, and I;m really having problems understanding the whole concept of classes, methods, arguments, parameters, constructors and so forth....can someone please explain this in baby terms....like a class is a big box and a method is something inside the box, or out!!!
thanks

Hi,
It looks you know nothing about programming. :)
Java is a very nice and easy programming language.
The best for you is to start programming to read a book
"Thinking in Java", Bruce Eckel. You can find it on the internet or download it from www.BruceEckel.com, or find it on www.filesearch.ru. This book will give you everything about Java. And then take any book what you like and go ahead. Practice, Practice and Practice!
Good luck!

Help understanding OO concepts.

Hi all,
I'm really struggling to get my head around OO programming. I am wanting to make a few simple programs to try and figure it out.
If I am wanting to have 2 classes and a main method class, say player and team class. It is obvious that the team class will have attributes and methods, as will a player.
Team:
Name - simple string.
Stadium - forget for now
Capacity - an int
Players - this is where my problem lies
Coach - forget for now
Manager - forget for now
Player:
Name - string
age - int
shooting - int
tackiling - int
passing - int
Now I can create a new object in my main method that will create a Player object with the above attributes. I am stuck with how to get a player object to be 'part of' the team.
I assume that I need to put the Player class into the Team constructor but am unsure how to do this. I treid looking up on the internet but am not sure what the process is called. If someone could either show me a good link on how to do something similar, or post up some sample code to demonstrate, or even better both, then I can read up on it and understand with an example.
What I really want is for the players to be held in an array within the team class, but not sure how easy this is to do for a beginner.
Thanks
Andrew

Hi thanks for the help. I think i will look into the
set, although it does seem a bit confusing for a
beginner. First though, regarding inheritance:
If in the Player class that extends TeamMember, if I
want to add extra attributes, how do I add these into
the constructor?
public class Player extends TeamMember
int speed;
int shooting;
int tackling;
int passing;
public Player (String name, String position, int
speed, int shooting, int tackling, int passing)
this.speed = speed;
this.shooting = shooting;
this.tackling = tackling;
this.passing = passing;
Is this how I would do it? Unfortunately at the
moment I do not have a comiler so cannot test - I am
a little confused as to how the super word was used.
Thanks
Andrewis Player really a TeamMember? I mean, it is, clearly, but is this relationship correct? I'd say that Player is a role that TeamMembers can have. what if you have a Player/Manager for instance? good OO principle: favour composition over inheritance.
using inheritance, Player would be a class, Manager would be a class, and then you'd need another class PlayerManager. not ideal. if members were composed of roles, you could simply give your Player/Manager both roles, and not need to worry about which class it extended. probably a tricky concept for you to grasp at the moment, granted, but something for you to investigate at your leisure :-)

Understanding ROLLUP Concept

Hi Friends,
I am taking ref. Of HR Schema and HR.Employees table..
I apply here Rollup Command To understand concept...But i m confused when i see below result...i didnt understand why it give this kind of results :
As per documentation ,ROLLUP used to generate Sub-totals and totals..
I write statement like this,
Select * from employees ;
select distinct sum(salary),job_id,first_name
from employees
group by rollup(job_id,first_name)
order by job_id
This gives me correct answer , (I shows u half of data)
     SUM(SALARY)     JOB_ID     FIRST_NAME
1     8300     AC_ACCOUNT     William
2     8300     AC_ACCOUNT
3     12000     AC_MGR     Shelley
4     12000     AC_MGR
5     4400     AD_ASST     Jennifer
6     4400     AD_ASST
7     24000     AD_PRES     Steven
8     24000     AD_PRES
9     17000     AD_VP     Lex
10     17000     AD_VP     Neena
11     34000     AD_VP
But when my below query run then,
select distinct sum(salary),job_id,first_name,last_name
from employees
group by rollup(job_id,first_name,last_name)
order by job_id
it will give me this o/p
     SUM(SALARY)     JOB_ID     FIRST_NAME     LAST_NAME
1     8300     AC_ACCOUNT     William     Gietz
2     8300     AC_ACCOUNT     William
3     8300     AC_ACCOUNT
4     12000     AC_MGR     Shelley     Higgins
5     12000     AC_MGR     Shelley
6     12000     AC_MGR
7     4400     AD_ASST     Jennifer     Whalen
8     4400     AD_ASST     Jennifer
9     4400     AD_ASST
10     24000     AD_PRES     Steven     King
11     24000     AD_PRES     Steven
I didnt get idea, why 2 times each entry comes.....please can somebody explain me simple manner how rollup works ??

It's not that complicated...
You do not have each entry twice.
You have
1 8300 AC_ACCOUNT William Gietz --> the summary of the salaries of all William Gietz, working as AC_ACCOUNT
2 8300 AC_ACCOUNT William --> the summary of the salaries of all people with firstname William working as AC_ACCOUNT which could be an aggregation of different Williams
3 8300 AC_ACCOUNT --> the summary of the salaries of all people working as AC_ACCOUNT
if you do not want row 2 but still want to show first and lastname, then you should do:
select sum(salary),job_id,first_name,last_name
from employees
group by rollup(job_id,(first_name,last_name))
order by job_idand don't put a distinct in a group by query, it's not needed at all.
hth
roger

Help me understand the concept of this timeline

I am coming from Final Cut Express and having a hard time understanding IM 09.
- I drag the clip into the Project
- I drag over the entire clip so that it has the yellow border around it
- I want to place a cut between the 2nd and third thumbnail so I drag the left border of the yellow rectangle inward and until it rests on the vertical border between the 2nd and third thumbnail
- I choose Edit > Split Clip
1.) Does this sound correct? Is that the right way to use the yellow rectangle to designate an area to cut at?
Thanks for any input!

stanwelks wrote:
... - I want to place a cut between the 2nd and third thumbnail so I drag the left border of the yellow rectangle inward and until it rests on the vertical border between the 2nd and third thumbnail
- I choose Edit > Split Clip
1.) Does this sound correct? ..
No.
a) no manual split needed:
• you drag clip#2 to desired position in clip#1
• place mouse IN clip#1: you'll notice, cursor changes into a green plus-sign
• when releasing mouse, a context-menu appears…
• choose insert - done.
compare with your workflow in FCE:
select portion of clip (I/O-points), drag to canvas, select insert from menu..
b) ... +between the 2nd and third thumbnail+ .. wrong again.
in iM09 you don't orientate on thumbnails. (sidenote: these differ on zoom-factor )
you orientate yourself by content in the Preview/'Canvas'
iM09 offers a faster-than-realtime preview of your clip (skimming)
for a consumer (like me), it is often easier to say: the insert of the broken car has to be between 'Auntie Ina smiling' and 'Auntie Ina's face falling' down.. wherever this is in time..
real content vs abstract time
when you switch on the 'advanced' tool, the context menu offer quite more features:
don't hesitate to watch the tutorials ..

Need sample application in dotnet to understand the concept of dataMining

Hi,
I am new to data mining and I know the genralize concept of Data Mining. I want to implement the application with Data Mining using c#.net or vb.net but don't know how to start. So any body know any sample application for data mining using c#.net or VB.net
please share the link or source code. Which will real help me and will be food for my thought process for data mining.
Thanks in advance.
Pramod

if multiple users are
accessing the same data base row, there will be
different primary key for each and every client.This is incorrect: the PrimaryKey is the unique identifier for each database row. It has nothing to do with users. In order for CMP to work, the container must be able to operate with a single row in the database and be able to distinquish between them.
If your CMP->database table already has one column that's unique, then you declare that CMP field to be <primary-key-field>. If you have more than one column that makes a row unique, you must make your own primary key object. The way the container can tell the difference between these primary key objects is to compare them, therefore the hashCode and equals methods.
Provide me the links where i can find the
answers.This is all discusssed in the J2EE Tutorial.

Unable to understand the concept of Indexing

Hi,
I searched for indexing.I only understood that it is used for performance tuning.Means a indexed query will run faster ,as compared to other query that is not indexed .But i did'nt understand how it is working .It seems i have known nothing about Oracle Index. Any idea?

user12222356 wrote:
Suppose i have a small table, with two or three columns, and a few data inserted into it. Then suppose i create an index on any column, what effect will be seen here ? Correlating with books index , we are intelligent enough to understand what we are searching for .we see related topic and go to that page.Note related topic.Even we did'nt find actual topic we try to find related topics.
As for oracle tables,each columns have values, and storing info about each column will generate anther table(as i think).So two table now.So will both the tables now be queered?Such a small table can be compared with a book that has only half a page with text. You don't need any index for that book. It is faster simply to read the whole book (it is only half a page long!). In database terms this would be a full table scan (FTS).
You need an index if the book is 100 pages thick. Usually most books will have several indexes. One at the start that tells you about the differnt chapters. And a glossary at the end, where you can look up certain keywords and you also get to know on wich page those keywords had been mentions.
Lets say you have a book about animals in Africa.
So when you search for a certain keyword you have two options. You keyword would be rhino.
FTS (Full table scan)
Either read the whole book from page 1 turning to page 2 and so on until you find the keyword. And if you find it you have to read on, because maybe the keyword is mentioned again at the very last page. You need to read the whole book.
You will find some parts about white and some parts about black rhinos.
Or
Index access
You go to the glossary and search for the rhino keyword there.
Since the glossary is ordered you'll find it very fast. You will also know that you don't have to read the full glossary because it is sorted alphabetically. You then go to the page in the book (=ROWID of the table) where you find the keyword. If the glossary mentioned several pages, then you need go to all of the pages to get the full picture.
it will even more efficient if you search for a keyword like "tiger". Since a tiger does not live in Africa you would need to read the whole book just to find out that there is no "tiger"-content inside. If you use the glossary then you can fast scan the two glossary pages to see that nothing about "tiger" inside.
So an index is very efficient in telling you where to find something, but sometimes also in telling you what you will not find.
Edited by: Sven W. on Jul 13, 2010 11:12 AM

Who understand the concept of EBS USER and LINUX USER

When we login the EBS, we will use a user(user1), and then we create a file to the server.
When we use TELNET to login the server, we can see the file is created by another user(user2).
How to understand both two users, and how to be relationship between those?
Thanks.

When we login the EBS, we will use a user(user1), and then we create a file to the server.What is the application release? OS?
When we use TELNET to login the server, we can see the file is created by another user(user2).What is the file? What kind of file system you have? Please post the steps you follow to explain your question.
How to understand both two users, and how to be relationship between those?If the file was created by one user, the ownership of the file will belong to the same user who created the file. If you see a different behavior, please show the case by listing the steps -- (i.e. post the commands of --> login to the server as user1, create a file as user1, show the id of the user and use the ls command to show the ownership, then login to the server as user2 and issue the same ls command).
Thanks,
Hussein

Understanding library concept

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