program-data independence
常見例句
- Program-data independence:It is a property of database system that the structure of data file is stored in the DBMS catalog separately from the access programs.
數(shù)據(jù)庫目錄包含每個文件的結(jié)搆,每條數(shù)據(jù)項的類型和存儲格式,以及針對數(shù)據(jù)的不同約束等信息。 - In order to keep the data independence from application program, the necessary local logical data structure can be self-defined in every individual application program.
爲(wèi)了實現(xiàn)數(shù)據(jù)對應(yīng)用程序的獨立性,應(yīng)用程序自行定義所需要的侷部邏輯數(shù)據(jù)結(jié)搆。 返回 program-data independence