For the developer who prefers the ACID-ity and solid structure of a relational database, or the project that requires it, sharding could be an exciting alternative.
That is, a deep understanding of the issues and practices involved in the phenomenon improves the valid-ity, sophistication and power of theoretical models developed.
也就是说，对于各种现象中的问题与实践的理解可以促进所设立的理论模型的有效性、完善性和影响力。
3
Moreover, the vast major-ity of purchases occur through self-services and without it intervention, and developers contribute new apps rather than Apple building them.