网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)
事务管理的特性叙述不正确的是

A.事务管理特性包括:(1)原子性、(2)一致性(Consistency)(3)隔离性(Isolation)、(4)持续性(永久性)(Durability)
B.原子性(Atomicity)是指数据库的逻辑工作单位。
C.隔离性(Isolation)是指可以被其他事务干扰。
D.持续性(永久性)(Durability)是指一旦提交,改变就是永久性的

参考答案

参考解析
解析:
更多 “事务管理的特性叙述不正确的是 A.事务管理特性包括:(1)原子性、(2)一致性(Consistency)(3)隔离性(Isolation)、(4)持续性(永久性)(Durability) B.原子性(Atomicity)是指数据库的逻辑工作单位。 C.隔离性(Isolation)是指可以被其他事务干扰。 D.持续性(永久性)(Durability)是指一旦提交,改变就是永久性的” 相关考题
考题 小王为本公司草拟了一份计算机设备采购合同,其中写到“乙方需按通常的行业标准提供技术支持服务”。经理审阅后要求小王修改,原因是 ( ) 。A.文字表达不通顺 B.格式不符合国家或行业标准的要求 C.对合同标的的描述不够清晰、准确 D.术语使用不当

考题 T1的数据速率是多少?______。 A.1.544MB/s B.2.048Mb/s C.34.368Mb/s D.44.736Mb/s

考题 在华为交换机上,命令“interface vlan vlan-id”的作用是( )A.创建一个VLAN B.创建或进入VLAN虚接口视图 C.给某端口配置VLAN D.进入VLAN视图下

考题 数据字典中“数据项”的内容包括:名称、编号、取值范围、长度和( )A.处理频率 B.最大记录数 C.数据类型 D.数据流量

考题 People are including in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒)party,say,that they are"in computers,"or"in electronic funds transfer".the implication is that they are part of the high-tech world,Just between US,they usually aren't.The researchers who made fundamental breakthroughs in those areas are in high-tech business.The rest of US are___1___of their work.We use computers and other new technology components to develop our products or to organize our affairs.Because we go about this work in teams and projects and other tightly knit working groups(紧密联系在一起的工作小组),we are mostly in the human communication business.Our successes stem from good human interactions by all participants in the effort,and Our failures stem from poor human interactions.The main reason we tend to focus on the___2___rather than the human side of the work is not because it's more__3____,but because it's easier to do.Getting the new disk drive installed is positively trivial compared to figuring out why Horace is in a blue funk(恐惧)or why Susan is dissatisfied with the company after only a few months.Human interactions are complicated and never very crisp(干脆的,干净利落的)and clean in their effects,but they matter more than any other aspect of the work.If you find yourself concentrating on the____4__rather than the___5___,you're like the vaudeville character(杂耍人物)who loses his keys on a dark street and looks for them on the adjacent street because,as he explains,"The light is better there!". 2、______A.technical B.classical C.social D.societal

考题 采用UML进行软件设计时,可用( )关系表示两类事物之间存在的特殊/一般关系,用聚集关系表示事物之间存在的整体/部分关系。A.依赖 B.聚集 C.泛化 D.实现

考题 以下关于大型复杂项目和多项目管理的叙述中,不正确的是()。A.大型复杂项目必须建立以过程为基础的管理体系 B.为了确保大型复杂项目的过程制度起到预期作用,必须在项目团队内部建立统一的体系,包括制定过程、计划过程、执行过程 C.大型复杂项目的项目过程确定后,再制定项目计划 D.大型IT项目大都是在需求不十分清晰的情况下开始的,所以项目自然分成需求定义和需求实现两个主要阶段