What is the physical meaning of automatic indexing of table entry...

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• What is the preferred means of data transmission as a type of record between the nested table of pl/sql program or an associative array

  What is the preferred means of data transmission in the associative array of the nested table record vs

  Choose between Nested Tables and associative arrays

  The two nested tables and associative arrays (formerly index - by tables) use similar index notation, but they have different characteristics when it comes to persistence and ease of passing parameters.

  Nested tables can be stored in a column of data, but can of associative arrays. Nested tables can simplify the SQL operations where you would normally join a single-column table with a larger table.

  Associative arrays are appropriate for relatively small lookup tables where the collection can be constructed in memory whenever a procedure is called or a package is initialized. They are good for the collection of the information volume is unknown beforehand, because there is no fixed limit on their size. Their index values are more flexible, as associative array indices can be negative, can be no sequential and can use values of string instead of numbers.

  PL/SQL automatically converts between the bays of the host and the associative arrays that use values of digital keys. The most effective way to move the collections to and from the database server is to implement data values in associative arrays, and then use these associative arrays with erections in bulk (the FORALL statement or BULK COLLECT clause).

  With the help of documents and Collections of PL/SQL

  Read this:

  How to pass the record set as a parameter of the procedure.

  https://community.Oracle.com/thread/2375173?TSTART=0

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• What is the difference between associative arrays and nested tables?

  Hello
  What is the difference between associative arrays and nested tables?
  
  nested tables cannot be indexed by other than pls_integer and unlike nested tables table associative cananot be declared at the schema level.
  
  is there any other difference set apart from the diff above 2?

  user13710379 wrote:
  What is the difference between associative arrays and nested tables?

  Name-value pairs (associative) against a list of values (table standard/nested table).

  nested tables cannot be indexed by other than pls_integer

  They are not "indexed" the way in which an associative array is indexed. A standard table is referenced by the position of the cell in the table. This position is essentially the offset of the memory of the cell from the start address of the table.

  Can not solve a cell in an associative array directly via a memory offset index. You place a cell reference value it by his 'name' (a search in the linked list/hash table).

  The following example shows the difference between the pairs of name / value and a list of core values.

  SQL> declare
    2          --// associative arrays are NAME-VALUE pairs
    3          type TArr1 is table of varchar2(10) index by pls_integer;
    4          type TArr2 is table of varchar2(10) index by varchar2(10);
    5
    6          arr1    TArr1;
    7          arr2    TArr2;
    8  begin
    9          arr1(100) := '1st entry';
   10          arr1(1) := '2nd entry';
   11          arr1(5) := '3rd entry';
   12
   13          arr2('john') := 'New York';
   14          arr2('jane') := 'Paris';
   15          arr2('jack') := 'London';
   16
   17  end;
   18  /
  
  PL/SQL procedure successfully completed.
  
  SQL>
  SQL>
  SQL> declare
    2          --// standard arrays are lists
    3          type TArr3 is table of varchar2(10);
    4          type TArr4 is table of number;
    5
    6          arr3    TArr3;
    7          arr4    TArr4;
    8  begin
    9          arr3 := new TArr3( '1st entry', '2nd entry', '3rd entry' );
   10
   11          arr4 := new TArr4( 100, 1, 5 );
   12  end;
   13  /
  
  PL/SQL procedure successfully completed.
  
  SQL> 
  

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• What is the exact meaning of the ATP in oracle?

  Hi all.
  
  I would like to know what exactly means GST.
  
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  >

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  When / how I should restart a failed javafx.concurrent.Service?  I have an exception handler that is Worker.State of the Service and restarts the Service if an exception is handled successfully.  Observers who are saved before the error handler see a lifecycle for the worker while observers registered after the error handler see a different life cycle.  Here is an example of what I mean:

  import javafx.application.Application;
  import javafx.application.Platform;
  import javafx.concurrent.Service;
  import javafx.concurrent.Task;
  import javafx.concurrent.Worker;
  import javafx.scene.Scene;
  import javafx.scene.control.Button;
  import javafx.stage.Stage;
  
  
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      private int retryCount = 1;
  
  
      @Override
      public void start(final Stage primaryStage) throws Exception {
          String osName = System.getProperty("os.name");
          String javaVersion = System.getProperty("java.version");
          String vmInfo = System.getProperty("java.vm.version") +
                  " (" + System.getProperty("os.arch") + ")";
  
  
          System.out.println("OS: " + osName);
          System.out.println("Version: " + javaVersion);
          System.out.println("VM Info: " + vmInfo);
          System.out.println("----------------------------------------");
  
  
          Service<Void> service = new Service<Void>() {
              @Override
              protected Task<Void> createTask() {
                  return new Task<Void>() {
                      @Override
                      protected Void call() throws Exception {
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                              throw new Exception("Fake exception");
                          }
                          return null;
                      }
                  };
              }
          };
  
  
          final StringBuilder sb1 = new StringBuilder("#1...\r\n");
          service.stateProperty().addListener((o, old, newState) -> {
              sb1.append(old).append(" --> ").append(newState).append("\r\n");
          });
  
  
          service.stateProperty().addListener((o, old, newState) -> {
              if(newState == Worker.State.FAILED) {
                  service.restart();
              }
          });
  
  
          final StringBuilder sb2 = new StringBuilder("#2...\r\n");
          service.stateProperty().addListener((o, old, newState) -> {
              sb2.append(old).append(" --> ").append(newState).append("\r\n");
          });
  
  
          service.start();
  
  
          Button close = new Button("Close");
          close.setOnAction(event -> {
              System.out.print(sb1.toString());
              System.out.println();
              System.out.print(sb2.toString());
              Platform.exit();
          });
          primaryStage.setScene(new Scene(close));
          primaryStage.show();
      }
  
  
      public static void main(String[] args) {
          launch();
      }
  }
  
  

  There will be no output until you click Close.  Here is the result:

  OS: Windows 8.1
  Version: 1.8.0_05
  VM Info: 25.5-b02 (amd64)
  ----------------------------------------
  #1...
  READY --> SCHEDULED
  SCHEDULED --> RUNNING
  RUNNING --> FAILED
  FAILED --> CANCELLED
  CANCELLED --> READY
  READY --> SCHEDULED
  SCHEDULED --> RUNNING
  RUNNING --> SUCCEEDED
  
  #2...
  READY --> SCHEDULED
  SCHEDULED --> RUNNING
  FAILED --> CANCELLED
  CANCELLED --> READY
  READY --> SCHEDULED
  RUNNING --> SCHEDULED
  SCHEDULED --> RUNNING
  RUNNING --> SUCCEEDED
  
  

  I find life a lot easier to reason about junior.  It is the cycle of life I expected to get by restarting Service method practice failed() because, according to the JavaDoc, it has the same effect that is assured to be the last wise listener.  See my related bug report:

  https://JavaFX-JIRA.Kenai.com/browse/RT-36771

  I find the second cycle of life more difficult to follow, but it's the only behavior I can get without using Platform #runLater (.) to restart the Service.  I can't quite yet reason on how the transition from EXECUTION to FAILURE becomes hidden.

  Using Platform #runLater (...) when you restart the Service in the most reliable way to get the behavior I prefer?  Is it possible to use Platform #runLater (...) to get to the back of the queue like that?  Is it OK to restart a Service from a listener of the Worker.State or is it something that should be avoided?

  Martin has responded to this in the bug report:

  Let's not the example of the forum. You're basically a (State) property is changed on the inside it's listener property, i.e. the listeners will get notified when it has been changed to a completely different State. This should be avoided and the best way to do so is Platform.runLater ().

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  while I'm going through this issue iam collage of the word 'instance' what it means that I do not understand
  
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