When data has a relational structure, data access, storage, and scalability are very efficient, but writing efficient and maintainable code becomes more difficult.
当数据具有关系结构时，其在数据访问、存储和可扩展性方面会非常高效，但编写高效的、可维护的代码则变得非常困难。
When data has an object structure, the trade-offs are reversed: Writing efficient and maintainable code comes at the cost of efficient data access, storage, and scalability.
当数据具有对象结构时，上述关系恰好相反：编写高效的、可维护的代码要以牺牲数据访问、存储和可扩展性方面的高效性为代价。
When data has an object structure, the trade-offs are reversed: Writing efficient and maintainable code comes at the cost of efficient data access, storage, and scalability.
当数据具有对象结构时，上述关系恰好相反：编写高效的、可维护的代码要以牺牲数据访问、存储和可扩展性方面的高效性为代价。
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