Data type that cannot participate in a columnstore index:
Constraint:
Bulk insert is now MS SQL Server - bulk copy program utility (bcp)
Doc: bcp
Actually, you can't define a primary key in a create table or alter table column statement (for now 20180219, you can only define a default constraint). You still can define a primary key if you add a column.
ALTER TABLE dbo.DimAccount
add columnNamePK int
CONSTRAINT PK_DimAccount PRIMARY KEY NONCLUSTERED NOT ENFORCED;
ALTER TABLE dbo.DimAccount drop constraint PK_DimAccount;
ALTER TABLE dbo.DimAccount drop column columnNamePK;