Logical and Physical Data Independencedoi:10.1007/978-1-4899-7993-3_80651-1Database schema; DBMS These concepts were developed to separate the database schema that the users and programmers see from the storage details and indexing methods of the database and are best...Elmasri, Ramez...
10. What is the difference between logical data independence and physical data independence?The user interface is where physical data independence occurs whereas the logical interface is where logical data independence occurs. The logical interface is where physical data independence occurs ...
Physical data independence means that the data’s physical structure can be modified but the application programs, the conceptual level, won’t be changed. The new changes are absorbed by mapping techniques. This type can help separate conceptual levels from the internal or physical levels and is ...
logical data independence 英 [ˈlɒdʒɪkl ˈdeɪtə ˌɪndɪˈpendəns] 美 [ˈlɑːdʒɪkl ˈdeɪtə ˌɪndɪˈpendəns]网络 数据...
physical data independence 物理数据独立性,数据实际结构独立性 logical data number 逻辑数据码 logical data structure 逻辑数据结构 logical data base 逻辑数据基,逻辑数据库 logical data link 逻辑数据链路 相似单词 independence n. 1.独立;自主;自立 2.【古】足以过温饱生活的收入(或财产) Independenc...
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Abstraction.Logical data models abstract away physical details, emphasizing data entities, attributes, and their relationships. Platform independence.Logical data models are independent of the specific DBMS or storage technology. Entity-relationship diagrams (ERDs).ERDs are a common tool for representing l...
logical data independence 逻辑数据独立性相关短语 logic swing (逻辑1与0之间的电压差) 逻辑幅度 word space (串行数据的) 字间间隔 view modeling (数据库用) 意图模型化 micro image data (录在胶片上的数据) 显微数据 parallel transmission (数据传输) 同时传输 real time telemetry link (数据传输) 实时遥...
美 英 un.逻辑数据独立性 网络逻辑资料独立性 英汉 网络释义 un. 1. 逻辑数据独立性
Optimizing Database Design: The Choice Between Three Levels Whether it is recommended to go through all three levels of database design (conceptual, logical, and physical) when developing a database for an IT system depends on the complexity and requirements of the project. In many cases,...