RECONCILING FOREIGN KEY REFERENCES AND TABLE SECURITY POLICIES

Some database tables include a relational field, where a record of the table stores a foreign-key reference value that identifies a related record of a second table. While fulfilling a request comprising a query over the database, the system may identify a context of the request, wherein the context is supplemental to the query, and wherein the context relates to the relational field. For example,a security policy may permit a requester to query the first table, but restrict the requester from accessing the second table that the relational field of the first table references, where dereferencing the relational field may cause unexpected results. Instead, the system may evaluate the context of the request, and may fulfill the request based on the context by providing a response that substitutes, for the value that references the second table, a substitute value that does not reference the second table. 些数据库表包括关系字段，其中表的记录存储标识第二表的相关记录的外键引用值。在实现包括在数据库上的查询的请求时，系统可以标识请求的上下文，其中上下文是对查询的补充，并且其中上下文与关系字段相关。例如，安全策略可以准许请求