A. The reaction between salt and water B. The reaction between sugar and water C. The reaction between vinegar and baking soda D. The reaction between oxygen and water 相关知识点: 试题来源: 解析 C。解析:Now let's look at some examples of acid-base reactions in our daily lives. Vinegar...
A base metal can be a common metal (element or alloy), which relatively low value, that is not used as a basis for currency. Examples include bronze and lead. A base metal can be the primary metal in an alloy. An example is iron in steel. A base metal can be a metal or alloy t...
根据上文“What is a database? A database is a collection of data or information that is organized, stored, and accessed electronically.(什么是数据库?数据库是用电子方式组织、存储和访问的数据或信息的集合)”以及后文“There are three main distinguishing aspects of any database(任何数据库都有三...
informationyou find on the internet and that in databases is that the information found in databases is often confirmed." (你在互联网上找到的信息和在数据库中找到的信息之间的一个主要区别是,在数据库中找到的信息通常是经过证实的。)可知,本段在讲数据库的可靠性。A项"它是可靠的"可以作为本段主旨句...
What is data? Data refers to any information that's captured and stored about a single person, place, thing, or object—called an entity—as well as the attributes of that entity. For example, if you're capturing and storing information about local restaurants, each restaurant is one entit...
There are several ways to search through a database, for example, using keywords, subject headings, terminology (术语), etc.One of the main differences between the information you find on the internet and that in databases is that the information found in databases is often confirmed. Further...
An example of a self-service knowledge base is the frequently asked questions (FAQs) page of a business website. It’s a good resource for uninterrupted customer support, as they can seek help at any time of the day. An eager customer who needs assistance in the middle of the night will...
The hierarchical model organizes data into a tree-like structure, where each record has a single parent or root. Sibling records are sorted in a particular order. That order is used as the physical order for storing the database. This model is good for describing many real-world relationships...
A base year is the first of a series of years in an economic or financial index. Base years are also used to measure the growth of a company.
In non-relational systems, data is often grouped intoflexible schemasthat can evolve over time, making them ideal for apps that require rapid development and scaling. For example, a document store might hold all customer interactions in one document per customer, avoiding the rigid structure of re...