Entity Framework DB first - link table joining to two foreign tables
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Current project uses Entity Framework DB first. I've been given a requirement which involves storing access credentials to third-party sites. The entity structure would look something like this:
public class ThirdParty
{
int Id { get; set; }
string Name {get; set;}
string RootUrl { get; set;}
}
public class ThirdPartyCredential
{
int Id { get; set; }
int ThirdPartyId { get; set; }
string Username { get; set; }
string Password { get; set; }
// additional FK's
}
The "additional" keys is where I'm struggling. We have two other tables called Account and Organisation: each account belongs to one organisation. But the credentials can exist at either the account or organisation level. I need my ThirdPartyCredential table to link to both.
I don't recall doing this in DB-first before. I recall that in Code first you can build something along these lines by inheriting from an abstract class, resulting in a link table with a "Discriminator" column. But I can't see how to replicate this in DB first?
entity-framework
asked Nov 26 '18 at 17:26
Matt ThrowerMatt Thrower
4,8571159119
add a comment |
Current project uses Entity Framework DB first. I've been given a requirement which involves storing access credentials to third-party sites. The entity structure would look something like this:
public class ThirdParty
{
int Id { get; set; }
string Name {get; set;}
string RootUrl { get; set;}
}
public class ThirdPartyCredential
{
int Id { get; set; }
int ThirdPartyId { get; set; }
string Username { get; set; }
string Password { get; set; }
// additional FK's
}
The "additional" keys is where I'm struggling. We have two other tables called Account and Organisation: each account belongs to one organisation. But the credentials can exist at either the account or organisation level. I need my ThirdPartyCredential table to link to both.
I don't recall doing this in DB-first before. I recall that in Code first you can build something along these lines by inheriting from an abstract class, resulting in a link table with a "Discriminator" column. But I can't see how to replicate this in DB first?
entity-framework
asked Nov 26 '18 at 17:26
Matt ThrowerMatt Thrower
4,8571159119
Is it possible to split ThirdPartyCredential table into two tables, using an "Is A" scheme?
– Erlangga Hasto Handoko
Nov 27 '18 at 2:55
add a comment |
Current project uses Entity Framework DB first. I've been given a requirement which involves storing access credentials to third-party sites. The entity structure would look something like this:
public class ThirdParty
{
int Id { get; set; }
string Name {get; set;}
string RootUrl { get; set;}
}
public class ThirdPartyCredential
{
int Id { get; set; }
int ThirdPartyId { get; set; }
string Username { get; set; }
string Password { get; set; }
// additional FK's
}
The "additional" keys is where I'm struggling. We have two other tables called Account and Organisation: each account belongs to one organisation. But the credentials can exist at either the account or organisation level. I need my ThirdPartyCredential table to link to both.
I don't recall doing this in DB-first before. I recall that in Code first you can build something along these lines by inheriting from an abstract class, resulting in a link table with a "Discriminator" column. But I can't see how to replicate this in DB first?
entity-framework
asked Nov 26 '18 at 17:26
Matt ThrowerMatt Thrower
4,8571159119
Current project uses Entity Framework DB first. I've been given a requirement which involves storing access credentials to third-party sites. The entity structure would look something like this:
public class ThirdParty
{
int Id { get; set; }
string Name {get; set;}
string RootUrl { get; set;}
}
public class ThirdPartyCredential
{
int Id { get; set; }
int ThirdPartyId { get; set; }
string Username { get; set; }
string Password { get; set; }
// additional FK's
}
The "additional" keys is where I'm struggling. We have two other tables called Account and Organisation: each account belongs to one organisation. But the credentials can exist at either the account or organisation level. I need my ThirdPartyCredential table to link to both.
I don't recall doing this in DB-first before. I recall that in Code first you can build something along these lines by inheriting from an abstract class, resulting in a link table with a "Discriminator" column. But I can't see how to replicate this in DB first?
entity-framework
entity-framework
asked Nov 26 '18 at 17:26
Matt ThrowerMatt Thrower
4,8571159119
asked Nov 26 '18 at 17:26
Matt ThrowerMatt Thrower
4,8571159119
asked Nov 26 '18 at 17:26
Matt ThrowerMatt Thrower
4,8571159119
asked Nov 26 '18 at 17:26
Matt ThrowerMatt Thrower
4,8571159119
asked Nov 26 '18 at 17:26
Matt ThrowerMatt Thrower
4,8571159119
4,8571159119
Is it possible to split ThirdPartyCredential table into two tables, using an "Is A" scheme?
– Erlangga Hasto Handoko
Nov 27 '18 at 2:55
add a comment |
Is it possible to split ThirdPartyCredential table into two tables, using an "Is A" scheme?
– Erlangga Hasto Handoko
Nov 27 '18 at 2:55
Is it possible to split ThirdPartyCredential table into two tables, using an "Is A" scheme?
– Erlangga Hasto Handoko
Nov 27 '18 at 2:55
Is it possible to split ThirdPartyCredential table into two tables, using an "Is A" scheme?
– Erlangga Hasto Handoko
Nov 27 '18 at 2:55
add a comment |
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Is it possible to split ThirdPartyCredential table into two tables, using an "Is A" scheme?
– Erlangga Hasto Handoko
Nov 27 '18 at 2:55