Cons. 1  Cannot span multiple databases... at least not easily. 2  All entities (tables, views, etc) need a primary key. 3  If you want to update a single column in a 100+ required columns table (not my table design), you have to pull down all 100 columns to make the update. Or use a Stored Procedure. I've had issues with some default values defined on SQL server not getting pulled into the entity model after a new record gets added. Usually this is with computed values, or values that get added in an INSERT Trigger On occasion, the SQL queries get badly written and are slow to execute.
Buying in advance is cheaper than buying at the station on the day and you could save an average of 43% on your train ticket. Advance tickets usually go on sale 12 weeks in advance, so the earlier you book the more likely you are to save.Ticket Alert.uying in advance is cheaper than buying at the station on the day and you could save an average of 43% on your train ticket. Advance tickets usually go on sale 12 weeks in advance, so the earlier you book the more likely you are to save. Ticket Alert.
Domestic rail fares in Netherlands are fixed and depend on distance travelled. There are no cheap advance purchase rail fares available. Standard prices cover travel in 2nd class carriages. A 1st class ticket will cost about 70% more than the 2nd class fare.ow to Buy Rail Tickets at the Station. At NS stations you can buy disposable tickets as well as buying/loading an OV-chip card. This can be done at either the (1) Tickets & Service counters or using the (2) yellow ticket machines with the blue strip on top showing the NS symbol.