单选题Which of the following is the main feature of an OLTP application?()A Summarized queriesB Granular transactionsC Voluminous historical dataD Heterogeneous data sources

题目
单选题
Which of the following is the main feature of an OLTP application?()
A

Summarized queries

B

Granular transactions

C

Voluminous historical data

D

Heterogeneous data sources

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相似问题和答案

第1题:

● Sources for data on activity durations and resource requirements can be gathered from which of the following:

A Past project records (historical data)

B Commercial techniques (standard practices, rules of thumb)

C Past project team members knowledge (experience, oldtimers)

D All of the above

E A and C only


正确答案:D

第2题:

Which of the following is a feature of a unit of work?()

A.It applies to a single data server.

B.It is a recoverable sequence of operations.

C.Its value can be queried from the system catalog tables.

D.It begins when the application connects to the data server.


参考答案:B

第3题:

Sources for data on activity durations and resource requirements can be gathered from which of the following:

A.Past project records (historical data)

B.Commercial techniques (standard practices, rules of thumb)

C.Past project team members knowledge (experience, oldtimers)

D.All of the above

E.A and C only


正确答案:D
D

第4题:

Which feature allows users to be granted granular permission Sets based on their responsibilities?()

  • A、Organization
  • B、AAA
  • C、RBAC
  • D、Groups

正确答案:C

第5题:

Which of the following is the main feature of an OLTP application?()

A.Summarized queries

B.Granular transactions

C.Voluminous historical data

D.Heterogeneous data sources


参考答案:B

第6题:

Describe techniques for extracting from heterogeneous data sources.

简述异构数据源中的数据抽取技术。


正确答案:
答:在数据仓库项目中,需要抽取的数据经常来自不同的数据源,它们的逻辑结构和物理结构都可能不同,即称之为异构数据源。
在对异构数据源进行整合抽取时,我们需要做的事情依次是标识出所有的源系统,对源系统进行概况分析,定义数据匹配逻辑,建立筛选规则,生成一致性维度。
对于源数据的操作系统平台和数据平台各不相同的情况,我们需要根据实际情况来确定如何进行数据抽取,通常的方法有建立ODBC连接、定义接口文件、建立DBLINK等方法。

第7题:

For which of the following is a data warehouse optimized?()

A.Backup and recovery

B.Transactions

C.Security

D.Queries


参考答案:D

第8题:

151 Sources for data on activity durations and resource requirements can be gathered from which of the following:

A. Past project records (historical data)

B. Commercial techniques (standard practices, rules of thumb)

C. Past project team members knowledge (experience, oldtimers)

D. All of the above

E. A and C only


正确答案:D

第9题:

A data warehouse is a subject-oriented data set used for reporting and analusis. Data warehouses can be subdivided into ( ). Which store subsets of data from a warehouse.

A.OLTPs

B.transactions

C.data sarts

D.OLAPs


正确答案:C

第10题:

A data warehouse is a subject-oriented data set used for reporting and analusis. Data warehouses can be subdivided into ( ). Which store subsets of data from a warehouse.

  • A、OLTPs
  • B、transactions
  • C、data sarts
  • D、OLAPs

正确答案:C

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