save data to database asp.net mvc : this is the error message :

(46,12) : error 2019: Member Mapping specified is not valid. The type 'Edm.String[Nullable=True,DefaultValue=,MaxLength=Max,Unicode=True,FixedLength=False]' of member 'SEJ_STARDATE' in type 'HotelSearch.APP_SEJOUR' is not compatible with 'SqlServer.date[Nullable=True,DefaultValue=,Precision=0]' of member 'SEJ_STARDATE' in type 'CodeFirstDatabaseSchema.APP_SEJOUR'.
(47,12) : error 2019: Member Mapping specified is not valid. The type 'Edm.String[Nullable=True,DefaultValue=,MaxLength=Max,Unicode=True,FixedLength=False]' of member 'SEJ_ENDDATE' in type 'HotelSearch.APP_SEJOUR' is not compatible with 'SqlServer.date[Nullable=True,DefaultValue=,Precision=0]' of member 'SEJ_ENDDATE' in type 'CodeFirstDatabaseSchema.APP_SEJOUR'.
(112,12) : error 2019: Member Mapping specified is not valid. The type 'Edm.String[Nullable=True,DefaultValue=,MaxLength=Max,Unicode=True,FixedLength=False]' of member 'PRIX_PRICE' in type 'HotelSearch.RFS_PRIX_R' is not compatible with 'SqlServer.date[Nullable=True,DefaultValue=,Precision=0]' of member 'PRIX_PRICE' in type 'CodeFirstDatabaseSchema.RFS_PRIX_R'.

how can i fix it ?