How to create a child-parent relationship in ADF

Similar Questions

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  Hi, can I get App demo on how to create the model & components declarative in ADF?

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  You can get the demo at the following link

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• expdp/impdp: constraints in the child-Parent relationship

  Hello
  
  I have a table parent1 and child1, child2 and chld3 tables have foreign key created on this parent1.
  
  Now, I want to do a delete on parent1. But as the number of records is very high on parent1, we go with expdp / impdp with option querry.
  
  I took the expdp parent1 level query. Now I dropped parent1 with option of cascade constraints and all foreign keys created by child1, 2 and 3 that parent1 references are automatically deleted.
  
  Now, if I have the impdp to the query of fire level dump file, are these foreign key constraints will be created automatically on child1, 2 and 3 or I need to manually recreate it?
  
  Kind regards
  
  ANU

  Hello
  The CF will not be in the dumpfile - see the code example below where I generate a sqlfile following pretty much the process that you would have done. This is because FK belongs to the DDL for the child table not the parent.

  Connected to:
  Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
  With the Partitioning option
  
  OPS$ORACLE@EMZA3>create table a (col1 number);
  
  Table created.
  
  OPS$ORACLE@EMZA3>alter table a add primary key (col1);
  
  Table altered.
  
  OPS$ORACLE@EMZA3>create table b (col1 number);
  
  Table created.
  
  OPS$ORACLE@EMZA3>alter table b add constraint x foreign key (col1) references a(col1);
  
  Table altered.
  
  OPS$ORACLE@EMZA3>
  
  EMZA3:[/oracle/11.2.0.1.2.DB/bin]# expdp / include=TABLE:\"=\'A\'\"
  
  Export: Release 11.2.0.3.0 - Production on Fri May 17 15:45:50 2013
  
  Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.
  
  Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
  With the Partitioning option
  Starting "OPS$ORACLE"."SYS_EXPORT_SCHEMA_04":  /******** include=TABLE:"='A'"
  Estimate in progress using BLOCKS method...
  Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
  Total estimation using BLOCKS method: 0 KB
  Processing object type SCHEMA_EXPORT/TABLE/TABLE
  Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
  Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
  . . exported "OPS$ORACLE"."A"                                0 KB       0 rows
  Master table "OPS$ORACLE"."SYS_EXPORT_SCHEMA_04" successfully loaded/unloaded
  ******************************************************************************
  Dump file set for OPS$ORACLE.SYS_EXPORT_SCHEMA_04 is:
    /oracle/11.2.0.3.0.DB/rdbms/log/expdat.dmp
  Job "OPS$ORACLE"."SYS_EXPORT_SCHEMA_04" successfully completed at 15:45:58
  
  Import: Release 11.2.0.3.0 - Production on Fri May 17 15:46:16 2013
  
  Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.
  
  Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
  With the Partitioning option
  Master table "OPS$ORACLE"."SYS_SQL_FILE_FULL_01" successfully loaded/unloaded
  Starting "OPS$ORACLE"."SYS_SQL_FILE_FULL_01":  /******** sqlfile=a.sql
  Processing object type SCHEMA_EXPORT/TABLE/TABLE
  Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
  Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
  Job "OPS$ORACLE"."SYS_SQL_FILE_FULL_01" successfully completed at 15:46:17
  
  -- CONNECT OPS$ORACLE
  ALTER SESSION SET EVENTS '10150 TRACE NAME CONTEXT FOREVER, LEVEL 1';
  ALTER SESSION SET EVENTS '10904 TRACE NAME CONTEXT FOREVER, LEVEL 1';
  ALTER SESSION SET EVENTS '25475 TRACE NAME CONTEXT FOREVER, LEVEL 1';
  ALTER SESSION SET EVENTS '10407 TRACE NAME CONTEXT FOREVER, LEVEL 1';
  ALTER SESSION SET EVENTS '10851 TRACE NAME CONTEXT FOREVER, LEVEL 1';
  ALTER SESSION SET EVENTS '22830 TRACE NAME CONTEXT FOREVER, LEVEL 192 ';
  -- new object type path: SCHEMA_EXPORT/TABLE/TABLE
  CREATE TABLE "OPS$ORACLE"."A"
     (    "COL1" NUMBER
     ) SEGMENT CREATION IMMEDIATE
    PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
   NOCOMPRESS LOGGING
    STORAGE(INITIAL 16384 NEXT 16384 MINEXTENTS 1 MAXEXTENTS 505
    PCTINCREASE 50 FREELISTS 1 FREELIST GROUPS 1
    BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
    TABLESPACE "SYSTEM" ;
  -- new object type path: SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
  ALTER TABLE "OPS$ORACLE"."A" ADD PRIMARY KEY ("COL1")
    USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255
    STORAGE(INITIAL 16384 NEXT 16384 MINEXTENTS 1 MAXEXTENTS 505
    PCTINCREASE 50 FREELISTS 1 FREELIST GROUPS 1
    BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
    TABLESPACE "SYSTEM"  ENABLE;
  -- new object type path: SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
  DECLARE I_N VARCHAR2(60);
    I_O VARCHAR2(60);
    NV VARCHAR2(1);
    c DBMS_METADATA.T_VAR_COLL;
    df varchar2(21) := 'YYYY-MM-DD:HH24:MI:SS';
   stmt varchar2(300) := ' INSERT INTO "SYS"."IMPDP_STATS" (type,version,flags,c1,c2,c3,c5,n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,d1,cl1) VALUES (''I'',6,:1,:2,:3,:4,:5,:6,:7,:8,:9,:10,:11,:12,:13,NULL,:14,:15,NULL,:16,:17)';
  BEGIN
    DELETE FROM "SYS"."IMPDP_STATS";
    c(1) := 'COL1';
  
    DBMS_METADATA.GET_STAT_INDNAME('OPS$ORACLE','A',c,1,i_o,i_n);
    EXECUTE IMMEDIATE stmt USING 0,I_N,NV,NV,I_O,0,0,0,0,0,0,0,0,NV,NV,TO_DATE('2013-05-17 15:43:24',df),NV;
  
    DBMS_STATS.IMPORT_INDEX_STATS('"' || i_o || '"','"' || i_n || '"',NULL,'"IMPDP_STATS"',NULL,'"SYS"');
    DELETE FROM "SYS"."IMPDP_STATS";
  END;
  /
  

  Kind regards
  Harry

  http://dbaharrison.blogspot.com/

• Calculation of average in the child-parent relationship

  Hello
  
  Oracle database version: 11.2.0.1.0
  
  Currently I'm having a problem of query to calculate the average value. Using the usual average query does not get the result I'm looking for. Because I'm not good with English, I will try to explain for example instead.
  
  Data table

  COD_A     COD_B     SALES     QTY     PRICE
  0000302     00003               6.09
  0000302     00003               11.7
  0000304     00003               14.08
  0000306     00003               8.87
  0000306     00003     3105     510     4.63
  0000306     00003               4.65
  0000308     00003     18091     1456     12.43

  If I try to calculate the average price of COD_A, I have the correct answer, as expected.

  SELECT COD_A, SUM(SALES), SUM(QTY), AVG(PRICE) FROM VDATATABLE GROUP BY COD_A ORDER BY 1;

  Average price per COD_A

  COD_A     SUM(SALES)     SUM(QTY)     AVG(PRICE)
  0000302                                8.895
  0000304                           14.08
  0000306     3105         510                6.05
  0000308     18091        1456              12.43

  --------------
  
  If I try to calculate the average price of COD_B, I don't have my expected result.

  SELECT COD_B, SUM(SALES), SUM(QTY), AVG(PRICE) FROM VDATATABLE GROUP BY COD_B ORDER BY 1;

  Average price per COD_B (1)

  COD_B     SUM(SALES)     SUM(QTY)     AVG(PRICE)
  00003     21196             1966              8.92142857142857

  The result I'm looking for is

  WITH W1 AS
  (SELECT COD_B, SUM(SALES) SALES, SUM(QTY) QTY, AVG(PRICE) PRICE FROM VDATATABLE GROUP BY COD_A,COD_B)
  SELECT COD_B, SUM(SALES), SUM(QTY), AVG(PRICE) FROM W1 GROUP BY COD_B;

  Average price of COD_B (2)

  COD_B     SUM(SALES)     SUM(QTY)     AVG(PRICE)
  00003     21196              1966         10.36375

  ---------
  
  So, the way I want to calculate the average price is the average of the lower child attribute and continue the average to its parent attribute. Currently I can get the result by using the clause, but the hierarchy available not only stops at COD_B, there is more (e.g. COD_C, COD_D, so on), so the foregoing WITH the query "seems" to be inflexible. If I want to ask the COD_C aggregation, I might have to put another COMPONENT in the query.
  
  So I was wondering is there any other better method to get the result I want? Something more dynamic as a recursive function or integrated maybe?
  
  Thank you
  
  Published by: user10620897 on October 19, 2011 04:15

  Hello

  Whenever you have questions, please post CREATE TABLE and INSERT statements for your sample data.
  Always tell what version of Oracle you are using. Don't say something vague, like "11g" in a label where it is easy to miss. Tell exactly what version you have in the body of the message. For example "I'm using Oracle 11.1.0.7.0.

  If you have N levels in the hierarchy, then using subqueries N-1, as you already do, might be the best way.

  If you use Oracle 11.2, you may be able to obtain these results by using a WITH recursive clause.

  Here's another approach to obtain the results desired with a hierarchy of level 2:

  WITH     got_cnt          AS
  (
       SELECT     cod_a, cod_b, sales, qty, price
       ,     COUNT (*) OVER (PARTITION BY cod_a, cod_b)     AS cnt
       FROM     data
  )
  SELECT       cod_b
  ,       SUM (sales)               AS sum_sales
  ,       SUM (qty)                  AS sum_qty
  ,       SUM (price / cnt)
         / COUNT (DISTINCT cod_a)     AS avg_price
  FROM       got_cnt
  GROUP BY  cod_b
  ;
  

  I think you can do this job for any number of levels without adding another subquery for all levels. You may need to add expressions to COUNT more for all levels, and the query only works for a fixed number of levels.

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  Apex 4.1

  Oracle 11g

  I created a form master detail and see the main table hotel_list and table hotel_mapping as detailed below.

  Hotel_list

  ID HOTEL_NAME

  1 Holiday Inn

  Hotel Hilton 2

  Hotel_mapping

  ID HOTEL_NAME MAPPING_NAME

  1 Inn Holiday Inn Select hotel

  2 holiday hotel Holiday Inn Select

  3 hotel Holiday Inn Holiday Inn Hotel

  4 Hilton Hotel Hilton Hotel chain

  Hotel Hilton 5 HiltonHotel

  Table Hotel_name Hotel_list is a linked table Hotel_mapping

  When I add a line to the Hotel_mapping table for the selected row in the hotel_list table, mapping_name of column is null, therefore impossible to create the relationship between the main table and the secondary table.

  I would like to know, how to create the relationship?

  Thank you very much

  Best regards

  Yong Huang,

  simple step see creating a form detailed master with APEX - Assistant Master retail

  and check how to maintain the relationship between two tables,

  simple return the packaged application «Sample of Masters details»

  and try to understand this concept...

  In your example, use Hotel_list.ID as a foreign key in the table Hotel_mapping

  and maintain the relationship with the column ID...

  and choose the display type of the column Hotel_list.ID in table Hotel_mapping as List(Query Based LOV) select.

  otherwise the best way is to create sample on oracle.apex.com

  I hope this helps...

  Leave.

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• How to create a relationship between two blocks

  Oracle forms 6i
  Hai All
  
  I've created a form that I have four button ADD, QUERY, SAVE, EXIT.
  
  I have two block named head and members.
  
  Four Chief areas namely block unitid, deptcode, codeno name.
  
  When I pressed the query button, and the cursor goes to the Chief name field when I enter the name of the leader and click
  
  Enter I give the codeno, the deptcode and the unitid of the leader_name.
  
  so now, I created another block in a tabular structure to bring members in the same deptcode that belongs to Leader_name.
  
  So pls tell me the steps how to create the relationship between these two blocks.
  
  
  When I enter the leader_name and gives enter need to bring the codeno, the deptcode, the unitid and
  
  I also need to give the members of this deptcode...
  
  
  Thanks in advance
  
  Srikkanth.M

  To write, only State a selection:

   :blk2.item = :blk1.item
  

  François

• Maker of SQL data - how to create the foreign key in the relationship 1 to 1?

  Hi guys...
  
  I had 2 tables...
  
  Table 1 - CFR
  -----------------------
  CFR_ID = primary key
  
  
  Table 2 - USER_PLAN
  ----------------------------
  User_id = primary key
  PLAN_ID ARGUMENT,
  CFR_ID = reference foreign key (table 1)
  
  
  Business flow go like this...
  table insdie CFR, it contains all the documents / transactions of a particular plan user. each time a new transaction occurs for a plan/user, a new CFR_ID / row will be generated.
  After that, the newly generated for the new line, CFR_ID will be updated to the CFR_ID in USER_PLAN
  
  
  Thus, there is always a 1 to 1 relationship between table 2, no matter how much CFR_ID is generated for a particular USER_PLAN. as the CFR_ID in the USEr_plan table will always be the last being produced within the table of the CFR.
  
  
  However, in the Data Modeler, I am unable to create this foreign key relationship... NO idea how create a 1 on 1 relationship of foreign key? or there is no way...
  
  
  Thank you and best regards,
  Noob

  Hey Noob,

  Yes, that's correct.

  Best regards
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• the query result child parent

  Hi all

  I write the query to the output of the Parent and the child's relationship and would need assistance. Would like to ask someone to help out me.

  I have a table like

  create the table par_chd

  (

  parent_id number (10),

  child_id number (10)

  );

  Who has data like

  SQL > select * from par_chd;

  PARENT_ID, CHILD_ID

  ----------- -----------

  1001 1011

  1001-1021

  1001 1031

  1001-1041

  1021 10210

  1031 10310

  6 selected lines

  I would like to have output as

  PARENT_ID CHILD_LEVEL_1 CHILD_LEVEL_2

  ----------          -------------              -------------

  1001 1011

  1001-1021-10210

  1001-1021

  1001 1031 10310

  1001 1031

  1001-1041

  1001

  7 selected lines

  Thanks in advance

  Saaz

  Hi Saaz,

  Minor adjustment to the script of Moazzam (who made 99% of employment):

  SELECT

  connect_by_root (parent_id),

  CASE

  WHEN LEVEL = 1 THEN child_id

  WHEN LEVEL = 2 THEN PREVIOUSLY child_id

  OTHER prerequisite parent_id

  END CHILD_LEVEL_1

  CASE

  WHEN LEVEL = 2 THEN child_id

  ANOTHER PREREQUISITE Child_id

  END CHILD_LEVEL_2

  CASE

  WHEN LEVEL = 3 THEN child_id

  END CHILD_LEVEL_3

  OF par_chd

  START WITH parent_id = 1001

  CONNECT BY parent_id = child_id PRIOR

  UNION ALL

  SELECT 1001, NULL, NULL, NULL FROM DUAL;

• How to identify the primary Parent of a shared node?

  We have a property that is set to Local defined, inherit,

  Suppose the 'Color' property and currently is the behavior in DRM

  Parent A - blue

  Child 1 - blue (inherited from Parent)

  Child 2 - color blue (inherited from Parent)

  Child 3-color blue (inherited from Parent)

  Parent B - Red

  Child 3 ~ part 1 - red color (inherited from Parent B)

  Child 4-color red (inherited from Parent B)

  Children 5 - red color (inherited from Parent B)

  The customer has improved the requirement so that in the case of shared members 'color' is inherited from the primary parent like the example below.

  Parent B - Red

  Child 3 ~ action1 - blue (inherited from "Primary" Parent A)

  Child 4-color red (inherited from Parent B)

  Children 5 - red color (inherited from Parent B)

  I guess I'm going to need a new property like 'Primary colors' and I need to write a formula to calculate the color of base on the primary parent.  However, I do not know how to identify the "main Parent" a shared node we use version 11.1.1.2 N-Tier

  I'm looking for suggestions on how to calculate the value of the property you want.

  Any help will be greatly appreciated.

  Hello

  You can create a new property derived like u said and use instead of the property defined in your exports or anywhere where you have to refer to the color. The property set can be used just to take the user input.

  The new derived property should be a logic like that-

  If (PropValue (Core.SharedFlag_MDM),

  NodePropValue (PropValue (Core.PrimaryName_MDM), Custom.Colour)

  PropValue (Custom.Colour))

  Now, 11.1.1.2 I lost the memory of how the properties are referred to as - if they are just used with their names or namespaces is mentioned (Core. , custom.). You can change the formula accordingly to view properties

  Thus, if SharedFlag_MDM is True, then it will take the value of the property to its primary node, which is inherited from the primary parent and if the shared flag is False then it is just a varValeurProp on the node itself.

  I hope that answers you.

  Thank you

  Denzz

• The professional events and child master relationship

  Hi all
  
  Consider there are two entities in a master-child relationship, is there a way to trigger the event of business such that the payload contains several details of a row for each master.
  I guess that declaratively, we must publish log sales on master and child entities separately.
  Is there another possible way?
  
  Thank you
  Lalit.

  Lalit,

  Your use case makes sense to me. My personal opinion is that the docs for business events in British Colombia ADF are a little light; However, there is a paragraph that gives a hint of a glimmer of a grain of hope that can run your scenario:

  To support scenarios of composition (for example, an order to buy with invoice lines), a child
  entity can raise events defined on the entity relationship and events defined on the child
  entity can include attributes of the parent entity. When a child entity raises an event
  on a parent entity, only one event is triggered for a top-level entity given by
  transaction, no matter how many times the child entity triggers the it.

  You have a relationship defined between your master/child entities composition?

  I had not the time personally to play with log sales again, unfortunately :(

  John