Question about different types of shared variables

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• Question about the Type of SQL equivalent Collection Oracle

  (1) I read documentation collections oracle, can I know why the 'STORE AS' clause is used only when creating the table, but not when the object creation?

  Table:

  CREATE TYPE CourseList AS TABLE OF VARCHAR2(64);
  CREATE TABLE department (
    name     VARCHAR2(20),
    director VARCHAR2(20),
    office   VARCHAR2(20),
    courses  CourseList)
    NESTED TABLE courses STORE AS courses_tab;
  

  Object:

  CREATE TYPE CourseList AS TABLE OF VARCHAR2(10)  -- define type
  CREATE TYPE Student AS OBJECT ( -- create object
     id_num  INTEGER(4),
     name    VARCHAR2(25),
     address VARCHAR2(35),
     status CHAR(2),
     courses CourseList)  -- declare nested table as attribute
  

  (2) also can I know what is the difference between OBJECT & RECORD?

  My understanding is that the OBJECT is entity sql where you create and store data in this document, while the RECORDING is PLSQL entity where you group different types of data elements in one?, hope you can give me an example to better understand.

  Thank you.

  Ariean wrote:

  (1) I read documentation collections oracle, can I know why the 'STORE AS' clause is used only when creating the table, but not when the object creation?

  Fix. The column of the course are (similar to an array) collection type. This requires a "nested table" for this column store the list of the values in this column.

  This approach however is an exception to the rule - as it flies in the face of robust and sound design mathematically, relational.

  (2) also can I know what is the difference between OBJECT & RECORD?

  A record is similar to a struct in C/C++. A record contains one or more fields/variables. It's a basic structure for the creation of a 'container of variables' and by the way this container between code units, as oppose to pass individual variables. It is also the basis for the creation of intelligent data structures in structured programming. For example an IP socket structure is a unique smart container consisting of items/variables such as socket, protocol family and type, flags address and so on.

  It is a standard feature in most (if not all) of the structured programming languages - C / C++ and Pascal, Cobol and Visual Basic. PL/SQL is based on the Ada language - and like other members of language (including Pascal), PL/SQL uses the word registration reserve to set a record structure.

  Objects are created in Oracle using the "create or replace type... as object'clause. The correct term is an object oriented class. This differs from a record as a class has data and code. Unlike a record that counts only data.

  Given in a class are called properties. The code of a class is called methods. There are different types of member methods and methods such as the static class constructors, destructive methods.

  Oracle class object is defined using SQL. (Methods) code of this class is set using PL/SQL.

  The classes also supports features like inheritance. Allowing a child class extend the implementation of the parent class. This is not supported by a record structure, beyond a structure that contains another structure as a field attribute. Classes supports the substitution in a child class, the methods of the parent class. As records are composed only of data and not code, there is nothing like ito feature for structures Records.

• Question about the use of constant variables in forms

  As I am still very new to forms, please forgive my ignorance, if the answer to my question is very simple. I'm trying to understand how to use constant variables in my application Forms. For example, if I want the return code of constants for the configuration application (not, mind these are examples):
  
  RC_SUCCESS CONSTANT PLS_INTEGER: = 1;
  RC_FAILURE CONSTANT PLS_INTEGER: = 0;
  RC_YEAR_DATA_NOT_FOUND: = 50;
  
  Then in a module I created, if I wanted to check the return code against one of the constants I would do:
  
  DECLARE
  RC PLS_INTEGER;
  BEGIN
  GET_YEAR_DATA ('2000 ', rc);
  IF rc = RC_YEAR_DATA_NOT_FOUND THEN
  -Make an error handling
  END IF;
  END;
  
  I know that you can declare constants within the individual procedures or packages, but I can't find information on how to do it in the world for the application. I read on the use of global variables in forms, but only the CHAR data type and the fact that the value can be modified doesn't really fit for this purpose have I missed something? Is there a config file or something for the Web server that can be used to configure these?
  
  Any help would be appreciated.
  
  Thank you

  To declare constants create a Package specification in a pll and deifne all your vitals, something like:

  PACKAGE PK_CONSTANTS IS
    RC_SUCCESS CONSTANT PLS_INTEGER := 1;
    RC_FAILURE CONSTANT PLS_INTEGER := 0;
    RC_YEAR_DATA_NOT_FOUND := 50;
  END;
  

  Then attach this pll for all your forms-modules and use it as

  IF rc = PK_CONSTANTS.RC_YEAR_DATA_NOT_FOUND THEN
    ..
  END IF;
  

  A word on exceptions or errors: to me more clear (and in the case of exceptions even better) to throw an exception only to hide behind return-codes.

• Urgent question about V23 and social sharing

  We publish our first series of questions using the viewer V23. Social, sharing, which worked well in previous numbers across all associated formats, now only works with the iPad made a SD (768 x 1024). HD (2048 x 1536) rendering returns the link to the default URL instead of the online content viewer. Everything is implemented as before except for the fact that the two fact sheets were published in PDF format.

  I took just to watch closer documentation and wonder if I should not only protected items in rendering SD, leaving the protected HD articles. The documentation seems to indicate this, but we have always protected the two renditions before and everything worked fine.

  What Miss me? We are on deadline and need to push another set of "renditions" is out today. Thanks to everyone in advance for any help.

  Steve

  OK, try it now.

  We had a small glitch this week and Social treatment has failed. We have fixed the problem and fix the issues involved including your was a.

  Your should be fixed now. You should be able to only publish PDF issues no problem, so no need for the PNG version.

  If anyone reading this has the same problem. The issues concerned should be fixed by EOD today. The other way to fix it is to simply "Update" the problem in Folio Producer since we deployed a solution of production.

  Steve, you should be good to publish your other question now.

• Question about the Type of Classification in 4.0.2.840

  Is it possible to add the Classification Types and/or change the colors for those who in 4.0.2?

  I looked in Preferences > diagram and there's only sub-menus for logic model and the relational model.

  I think that remember that some versions also had a Type of Classification submenu in which you might add custom so types that change the colors associated with them.

  It's been a while that I used the tool - maybe I'm not remembering correctly...

  Rgds, BP

  Hello

  Since they are design related, classification types are moved design properties dialog box (settings-> diagram) and Yes, you can add custom collation types.

• Question about the use of sharing with several pools of resources

  The design of our environment vSphere has several pools of resources at the root, each series 'Normal' value stocks, and if the resources tab shows that each resource pool '% of the shares' value of 3%.

  However, some resource pools have 50 + VM and others have only 1 or 2.

  Is someone can confirm that this is wrong and that should have a pool of resources with more than VM have a proportionately higher value of action?  This assumes of course that all the resource pools are of same priority (be they makes me wonder why we use pools of resources at all... but that's another issue)

  The reason why I ask is that the 'worst deal allocation' is for memory and CPU is much higher on the pools of resources with multiple virtual machines, so it's obviously something in the algorithm of resource allocation that is aware of the total number of virtual machines in the pools. Resource pools are defined as extensible and I'm assuming that this "worst case allocation" would go down considerably as the cluster approached his ability, but I wanted to check before starting to change things...

  Welcome to the Forums - you are right to worry about this situation - check on http://www.yellow-bricks.com/2010/02/22/the-resource-pool-priority-pie-paradox/ for description - but don't worry Duncan also has a solution - http://www.yellow-bricks.com/2010/02/24/custom-shares-on-a-resource-pools-scripted/

  If you find this or any other answer useful please consider awarding points marking the answer correct or useful

• Question about the type of database, we create.

  Dear gurus,
  
  We create an application where Back-end is the Oracle 10 g 2 database and UI is Java.
  
  Let me explain what we intend to do on the side of the DB. (Say that the name of our DB is NPS)
  
  1. we intend to have a single database, and it contains 2 diagrams. There is a scheme and any other scheme of Transaction.
  
  The schema of the transaction contains tables and these data tables is filled on a daily basis and this is achieved from a different database (Say NP).
  If the database transaction will get data from the NP. That is to say NP-> NPS (Transaction).
  
  Note: The data can be loaded into our tables in the schema of the Transaction once in the day.
  
  2. we need to show these data to users. This user interface is created using Java.
  Now, we got a lot of users (waiting 600) hitting the daily application, at any time in a day.
  
  So, we plan to go for Reporting scheme. For the schema of the transaction will be just be fetch data from the database.
  
  The Reporting schema contains a few warehouse tables that are there in the scheme of the transaction.
  
  Our notification dashboards should get the data from our data of Transaction so it has to be updated periodically since the schema of the Transaction for any new data that we get from the other database.
  
  Can someone explain to me what is the best way to do it.
  Is there a better approach than what I explained.
  
  Thank you
  Maddy.

  Based on what you have posted, I can make the following observations and recommendations.

  1. 600 users not there. Amazon.com has 300 000. 15 + years I had an Oracle 7.3.4 database with more than 10,000.
  2. nothing you wrote never justifies the second schema that contains duplicate data... there just need to SELECT on the schema of the first privileges.
  3. 10 gr 2 penetrates support mode in just a few months. Why build something today that will be obsolete this summer? Go to 11 GR 2.
  4. learn... materialized views they might have some value according to works of your load.
  5. Java is not a reporting tool. Why not get a writer true Crystal, Business Objects, Oracle BI Publisher, discoverer or Siebel Analytics report?

• Question about a type of file being created in ORACLE_HOME/dbs

  DB version: 11.1.0.7.0
  
  Operating system: aix 6.1
  
  The directory ORACLE_HOME/dbs, as well as spfiles, password file, I can do with the file naming

  hc_<instance_name>.dat

  What is this file?

  Directly from MOS: what is the $ORACLE_HOME/dbs/hc_.dat file? [390474.1 ID]

  It is a file used for the verification of health monitoring.

• Pass a reference to the shared variable

  I use two shared variables in a loop where I write one and read each other.  I need to repeat this loop 5 times, but each loop uses a different pair of shared variables.  These variables are shared between a vi on the computer and a cRio.

  It would be ideal to incorporate this loop into a Subvi where I can pass a reference to the two shared variables in and then read and write in threw these references.  Then I could just call this Subvi 5 times, instead of copying and pasting the loop 5 times.

  Is it possible that I can accomplish this?  I can't find an example that would achieve this.

  Thank you

  If I understand correctly, you can use the mode programmatic access to shared Variables and it would work.

  http://zone.NI.com/reference/en-XX/help/371361H-01/lvconcepts/sv_usingdynvarapi/

  http://zone.NI.com/reference/en-XX/help/371361G-01/lvconcepts/usingdynvarapi/

• What is the blue thing in the shared variable?

  I'm going thorough a code that has the huge set of shared variables and in some nodes, I find a blue color of brand/thing left bottom just worldwide as shown below.  What this indicates?

  

  Thank you

  Ajay

  I found the answers of my team member.  The blue mark indicates in fact a point and a slash ". ------"which means relative sharing Variable target."  If the shared Variable is absolute, this indication does not appear.  To learn more about the difference between shared variable absolute and Relative target, check it out here.  A Shared variable node can be established between absolute and relative assistance

  Menu popup (right click the node)-> reference mode.

  Thank you

  Ajay.

• Ask about the types of objects

  Hello
  
  I have a question about the type of object. I want to see the script for the type of object created, that is already stored in the database. How can I see who
  
  
  Concerning

  Hello

  So, you can try [DBMS_METADATA. GET_DDL | http://download.Oracle.com/docs/CD/B19306_01/AppDev.102/b14258/d_metada.htm#ARPLS640]...

  MHO%xe> create or replace type mytype as object( col varchar2( 10 ));
    2  /
  
  Type is aangemaakt.
  
  Verstreken: 00:00:00.37
  MHO%xe> select dbms_metadata.get_ddl('TYPE', 'MYTYPE') from dual;
  
  DBMS_METADATA.GET_DDL('TYPE','MYTYPE')
  ------------------------------------------------------------------------------
  
    CREATE OR REPLACE TYPE "MHO"."MYTYPE" as object( col varchar2( 10 ));
  

• How can I dynamically select the shared Variable API programming data type?

  I am trying to create a configuration of open connections of variable shared using the programming API. It seems to me that the cleanest way to do would be to put one "open and check" routine in a loop, then call it for each variable in the library.

  The question that I am running is that I have different types of data in my library (to help a server Modbus i/o and data types 'boolean' and 'single' in my library.) How can I dynamically select the data type of the shared variable API?

  See the attached snipit.

  Thank you

  What I ended up doing was doing a Subvi to open, read, write, and close each data type, I use the packaged in 4 polymorphic SubVIs (polymorphic Open, read, etc...)

  Now all I have to do I drop in the polymorphic Subvi and it switches automatically to the appropriate data type

• "Not a valid error code" when you create a shared variable of data type custom

  I am trying to create a shared variable with a data type of a 2d double table. I created a custom control that contains a table with a numeric type for this 2d. Manager of distributed system v12 I select 'add a variable', then select 'of the custom control. Once select my control I get the following error: "invalid data type. You want to choose a different data type. Any advice as to why it doesn't work? Thank you.

  This seems to be recorded in the CAR #405941.  All this is a bit strange, but I'll try better possible workaround solutions I can.  I tested a large number of these myself, and here is what I found.

  1. make sure that the custom control you did was created in 2012 of LabVIEW or you save it in an earlier version.  If you save on an earlier version, you may also open the .ctl in LabVIEW 2012 and resave it (I needed to do).  I tried to create my own control in 2012, as well as save the control to a previous version, the two worked, but I don't end up with the same result (I don't understand this, but I wanted to mention it so that you know).

  2. it seems that you are able to make the variable shared by program by modifying the example of the community to adapt to your needs.  If you do not need to create many variables it may be the best option if it works for you.

  I would also try adding the variable of the LabVIEW project, you are working on that.  It wasn't a direct troubleshooting step but there are several ways of doing things in LabVIEW and, sometimes, one of them is working while the other does not.

  Edit: Example of community is here https://decibel.ni.com/content/docs/DOC-16863

• Question about local variable in LabVIEW

  I am a new bie to LabVIEW.

  I have a question about local variable in LabView.

  I tried to stop a loop by the local variable, but the value of the loop for counter is different with my hope.

  I think that the loop to stop at 6, but he stopped at 7.

  Could someone help me?

  This looks exactly like a race condition.  You have know control if the control terminal is first in reading or the local variable is written to the first.

  Try to run your code to highlight execution.

  In your code, what usually happens is that order is read and the value is false.  Then the other code will run allowing the value to write to the local variable.  Let's say that in a particular loop iteration, we get the True value.  But control of the final value has already been read as false, then the loop runs again.  The next iteration of the Terminal is read and then he sees the true, will force to stop no matter what happens in the rest of the loop the loop.

  So, why do you use a local variable instead of sending just the wire to the terminal stop?

• A question about type

  Okay, at the risk of exposing me like a complete jerk, I need to ask a question about type.

  I use Fireworks CS4 to design a website of 40 to 50 pages. Most of the site is composed of ten stories, each taking two to five pages of the site. I use ghraphic and pictures to break up the grey type and illustrate the words. I anticipate using 14pt Arial for my policy. The text will be displayed on a 'unique' (that is to say, not repetitive) texture.

  I put on my pages with photos and other graphics, and I glued the type of original stories around the images. (I don't use Lorem ipsum for text space booked because I wanted an accurate measure of the screw-the-page notice words.) In other words, I wanted to be sure that everything fit and don't let no troublesome space at the end).

  I know that I do not export the type with images in Dreamweaver. I'll remove the text in Fireworks when I export, then paste it in Dreamweaver so that the pages appear as I have originally designed the.

  However, my question is this: If a reader opens one of my pages with his default computer to, say, 12pt Verdana, if it screws up the layout of my page? As I said above, I have designed the pages at Arial 14 pt. If the type will flip off my pages - or type will inches less on a page - if the Player browser is set to a different font size or point? If Yes, what can I do to make my pages (or contraction) to adjust the reader his reading preferences?

  Thanks again for your help. Of course happy that I do not use my real name on it.

  When you write the HTML code, you place the images next to the paragraphs they are associated if the police or the window changes size, then the whole of the document is redéroule, but logically, everything to its planned place. This can be frustrating for people who are used to define exactly where the images appear with respect to the text and even kerning and spacing to make a line "so." You will have awkward gaps somewhere, let it go... let the way you free from this concern.

  Everything is in a box, however. In this box, you can put images repetitive or expandable. So yes, you can put a background behind the text, no repetitive image on each of your pages and you should be able to set the box so that duplication of the background image will not appear if it is larger than the active area. (I think it would be in the CSS overflow divs property... you'd have to check).

  Here are some tutorials using broad, non-repetitive background images for the page. You could adapt the technique to a content div:

  http://Line25.com/tutorials/basic-Web-page-background-techniques-with-CSS (scroll down)

  http://www.WebDesignerWall.com/tutorials/how-to-CSS-large-background/

  On the other hand, however, lines of text that are more than 2 to 2.5 wide alphabets are difficult to analyze. If your site is intended to be text-heavy, you might be better off with a fixed width for your text box.

  I think that the comment the blogger relates using Fireworks Slicing page to export HTML code, which gives you a fixed design, based on a table. The HTML code, you can export FW is not for live sites. It's just for prototyping. It is better to use CSS for layout, rather than tables, because the code is easier to maintain. I came across this interesting tutorial (the author uses Photoshop, but any graphic program works if you want to follow along):

  http://NET.tutsplus.com/tutorials/HTML-CSS-techniques/design-and-code-your-first-website-i n-easy-to-understand-steps.

  (I hope this helps you!)