Is relational DBMS physical data model suitable for spatial data？如果不适合，有哪两类解决途径？
The TCP／IP network model differs from the more popular OSI model. Which of the layers below belong to the TCP／IP model?()A. application layerB. session layerC. transport layerD. internet layerE. network layerF. data link layerG. physical layer
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Which layer of the OSI reference model uses flow control, sequencing, and acknowledgements to ensure that reliable networking occurs?()A. data linkB. networkC. transportD. presentationE. physical
cloud storage is a model of computer of computer data storage in which the digital data is stored in logical pools.The physical storage spans multiple servers（somentimes in multiple locations）,and the physical environment is typically owned and managed by a hosting company.As for the cloud concepet,the cloud storage service is one kind of（ ）.A.、laaS B.PaaS C.SaaS D.DaaS
（ ）is a massive volume of structured and unstructured data so large it is difficult to process using traditional database or software technique.A.Data Processing system B.Big Data C.Data warehouse D.DBMS
（ ）is a programming model and an associated implementation for processing and generating big data sets with a parallel,distributed algorithm on a cluster.The model is a specialization of the split-apply-combine strategy for data analysis.A.HDFS B.Chukwa C.MapReduce D.HBase
A Database Management System(DBMS)consists of A.collection of interrelated data and a collection of（）to access to that data.A.programs B.memory C.space D.password
The TCP/IP stack is a complete set of networking protocols.The OSI Model was meant to be a standardized way of connecting devices together,and most protocols have some direct correlation to the OSI Model.The OSI Model has 7 layers,the fourth layer is called______.A.physical layer B.data link layer C.application layer D.transport layer
