many-to-many relationship with TClientDataSet












0














I have two database tables:




  1. students table

  2. classes table


There is a many-to-many relationship between the two tables: a student can go to several classes and a class can have several students.



I would like to implement the tables in Delphi with TClientDatasets and have a TDBGrid which list all the students and a second TDBGrid which list all the classes which the currently selected student attends.



As far as I understand it I need a join table which establishes the relationship between the students and the classes table with the following fields:




  • StudentID

  • ClassID


But I don't know how to implement the relationships between the different TClientDatasets so that I get the TDBGrids working as described above.










share|improve this question






















  • In this case the fact that a class can contain several students is irrelevant. Build your index by student, then class within student.
    – Dsm
    Nov 23 '18 at 13:44










  • I think what you want is a master-detail relationship. Try to search for these keywords.
    – nil
    Nov 23 '18 at 15:15
















0














I have two database tables:




  1. students table

  2. classes table


There is a many-to-many relationship between the two tables: a student can go to several classes and a class can have several students.



I would like to implement the tables in Delphi with TClientDatasets and have a TDBGrid which list all the students and a second TDBGrid which list all the classes which the currently selected student attends.



As far as I understand it I need a join table which establishes the relationship between the students and the classes table with the following fields:




  • StudentID

  • ClassID


But I don't know how to implement the relationships between the different TClientDatasets so that I get the TDBGrids working as described above.










share|improve this question






















  • In this case the fact that a class can contain several students is irrelevant. Build your index by student, then class within student.
    – Dsm
    Nov 23 '18 at 13:44










  • I think what you want is a master-detail relationship. Try to search for these keywords.
    – nil
    Nov 23 '18 at 15:15














0












0








0







I have two database tables:




  1. students table

  2. classes table


There is a many-to-many relationship between the two tables: a student can go to several classes and a class can have several students.



I would like to implement the tables in Delphi with TClientDatasets and have a TDBGrid which list all the students and a second TDBGrid which list all the classes which the currently selected student attends.



As far as I understand it I need a join table which establishes the relationship between the students and the classes table with the following fields:




  • StudentID

  • ClassID


But I don't know how to implement the relationships between the different TClientDatasets so that I get the TDBGrids working as described above.










share|improve this question













I have two database tables:




  1. students table

  2. classes table


There is a many-to-many relationship between the two tables: a student can go to several classes and a class can have several students.



I would like to implement the tables in Delphi with TClientDatasets and have a TDBGrid which list all the students and a second TDBGrid which list all the classes which the currently selected student attends.



As far as I understand it I need a join table which establishes the relationship between the students and the classes table with the following fields:




  • StudentID

  • ClassID


But I don't know how to implement the relationships between the different TClientDatasets so that I get the TDBGrids working as described above.







database delphi many-to-many tclientdataset






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 23 '18 at 13:28









user3384674

318115




318115












  • In this case the fact that a class can contain several students is irrelevant. Build your index by student, then class within student.
    – Dsm
    Nov 23 '18 at 13:44










  • I think what you want is a master-detail relationship. Try to search for these keywords.
    – nil
    Nov 23 '18 at 15:15


















  • In this case the fact that a class can contain several students is irrelevant. Build your index by student, then class within student.
    – Dsm
    Nov 23 '18 at 13:44










  • I think what you want is a master-detail relationship. Try to search for these keywords.
    – nil
    Nov 23 '18 at 15:15
















In this case the fact that a class can contain several students is irrelevant. Build your index by student, then class within student.
– Dsm
Nov 23 '18 at 13:44




In this case the fact that a class can contain several students is irrelevant. Build your index by student, then class within student.
– Dsm
Nov 23 '18 at 13:44












I think what you want is a master-detail relationship. Try to search for these keywords.
– nil
Nov 23 '18 at 15:15




I think what you want is a master-detail relationship. Try to search for these keywords.
– nil
Nov 23 '18 at 15:15












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