logical vs. physical Dictionary Thesaurus Medical Legal Financial High-level versus low-level. Logical implies a higher view than the physical. Users relate to data logically by data element name; however, the actual fields of data are physically located in sectors on a disk. For example, to ...
数据建模 Database Modeling:概念 (Conceptual) vs 逻辑 (Logical) vs 物理数据 (Physical) 模型 数据建模是一种使用实体关系图(ER图)记录软件系统的技术,实体关系图是公司数据库表中数据结构的表示。它是公司业务需求的非常有力的表达。数据模型有多种用途,从高级概念模型、逻辑到物理数据模型,通常由实体关系图表示...
Synonyms for logical vs. physical in Free Thesaurus. Antonyms for logical vs. physical. 59 synonyms for partition: screen, wall, barrier, divider, room divider, division, splitting, dividing, separation, segregation, severance, separate, screen... What
本文提出了一种支持重复数据删除的术语索引设计,IDEA。将术语映射到包含它们的唯一块,并将每个块映射到包含它的文件。这一基本设计概念提高了索引性能,并可以支持高级功能,如内联索引、结果排名和邻近搜索。 用术语到块映射取代了传统索引中的术语到文件映射,其大小与系统中物理存储的唯一内容成比例。用额外的块到文件...
随笔分类 - 运算符重载,浅拷贝(logical copy) ,vs, 深拷贝(physical copy),三大件(bigthree problem) 公告 昵称: shouqiang Wei 园龄: 12年 粉丝: 12 关注: 43 +加关注 < 2024年12月 > 日一二三四五六 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 ...
int size; void clone(const Vector& a); void dispose( ); public: Vector(int s=0); // a default constructor initializing all members of rep to 0 if s is not 0. Vector( int*, int ); // a constructor creates a Vector object from an ordinary array ...
Fix logical vs physical schema mismatch for aliased Which issue does this PR close? Part of#12733 We found another bug for aliased now() columns. Rationale for this change See the reproducer in thefirst commit. Both of the next two commits are required for the fix....
int size; void clone(const Vector& a); void dispose( ); public: Vector(int s=0); // a default constructor initializing all members of rep to 0 if s is not 0. Vector( int*, int ); // a constructor creates a Vector object from an ordinary array ...
Logical data models provide an abstract representation of data, emphasizing business concepts and relationships, while physical data models offer a highly specific, detailed representation of the database structure. Independence vs. DBMS Integration Logical data models are independent of the DBMS, while ...
Logical vs. physical disk shadowing 来自 掌桥科研 喜欢 0 阅读量: 39 作者:G Graefe,LD Shapiro 摘要: Summary form only given. Bitton and Gray (1988) have defined disk shadowing as a technique for maintaining a set of two or more identical disk images on separate disk drives. Its primary ...