adj.有关的，相关的

The database is organized in a relational format, allowing for efficient querying and data management.
数据库以关系格式组织，便于高效查询和数据管理。
A relational table consists of rows (tuples) and columns (attributes), representing entities and their relationships.
关系表由行（元组）和列（属性）组成，表示实体及其之间的关系。
In a relational model, data is stored in tables with well-defined relationships between them.
在关系模型中，数据存储在具有明确关联的表格中。
To normalize a database, you break it down into smaller, independent relational tables.
要规范化数据库，将其分解为更小、独立的关系表。
SQL is the standard language used for manipulating and querying relational databases.
SQL是用于操作和查询关系数据库的标准语言。
Entities in a relational schema often have one-to-many or many-to-many relationships with other entities.
关系模式中的实体通常与其他实体存在一对一或一对多的关系。
The primary key in a relational table uniquely identifies each record, establishing a relationship with other tables.
关系表中的主键唯一标识每个记录，与其他表建立关系。
Relationships in a database can be established through foreign keys, which reference the primary keys of other tables.
通过外键在数据库中可以建立关系，它们引用其他表的主键。
Relational databases support transactions to maintain consistency and integrity when handling concurrent operations.
关系数据库支持事务，以保持一致性并在处理并发操作时保持完整性。
Data warehousing often involves extracting data from multiple sources and organizing it into a star or snowflake schema, a type of hierarchical relational structure.
数据仓库通常涉及从多个源提取数据，并将其组织成星型或雪花模式（一种层次关系的结构）。