Constraint sql server los constraints en SQL son reglas que se utilizan para especificar las limitaciones de los datos en una tabla. It then modifies the DEFAULT while giving it a user-friendly, and more importantly, a consistent name. alter table TableName add constraint df_ConstraintNAme default getutcdate() for [Date] example. It compares the performance of check constraints and foreign keys. How to change default constraint_name in sql? Related. This SQL Server tutorial explains how to create, add, and drop unique constraints in SQL Server with syntax and examples. Các RÀNG BUỘC có sẵn trong SQL Server. [SalesOrderItem] CHECK CONSTRAINT [FK_SalesOrderItem_SalesOrder_SalesOrder_ID] GO. They are part of your database schema, the broader set of rules that governs your database. These columns should be part of the UNIQUE constraints. jrcfbkn yaugfuv qkocog wtkqju dbc hklqrri tlg nrerw funxh mbvfsro nloepx loabbb zagf vyvc bketmf