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Learning Basic Vocabulary for Database Tables in English
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When learning about databases, it is important to have a strong grasp of the basic vocabulary associated with database tables. Database tables are the foundation of any database system, and as a result, understanding their structure and terminology is crucial to effectively designing, managing, and utilizing databases.
In this article, we will explore some of the fundamental terms and concepts associated with database tables in English.
Columns
Columns, sometimes referred to as fields or attributes, are the building blocks of a table. Columns represent the specific pieces of information that are to be stored in a table. They come in a variety of data types, including text (VARCHAR), numbers (INTEGER), and dates (DATETIME).
Rows
Rows, also known as records or tuples, refer to the individual instances of data within a database table. They contn data that pertns to a single entity or object, such as a customer or product. Each row is made up of one or more columns that are filled with relevant data.
Primary Key
The primary key is the unique identifier for each row in a database table. It is typically a single column that has been designated as a primary key and is used to ensure that there are no duplicate entries within the table. Unique values are often generated automatically, such as through the use of auto-incrementing integers or GUIDs.
Foreign Key
A foreign key is a column in one table that refers to a primary key in another table. This establishes a relationship between the two tables, allowing for data to be extracted and combined in useful ways. Foreign keys are often used in conjunction with join statements to create more complex queries.
Indexes
Indexes are used to improve the performance of database searches and queries. They are used to speed up the retrieval of data by providing a fast, optimized access path for data that is frequently accessed. Indexes can be created on one or more columns in a table, with the most commonly accessed columns being the best candidates for indexing.
Normalization
Normalization is the process of organizing data within a database table to reduce redundant data and improve data integrity. This is achieved by breaking a large table into aller, more focused tables that are connected through relationships. This helps to ensure that data is stored in the most efficient and secure manner possible.
Conclusion
Understanding the basic vocabulary associated with database tables is crucial to effectively managing and utilizing databases. By familiarizing yourself with the terms and concepts discussed in this article, you will be able to design, implement, and mntn databases with ease. Study the vocabulary often, and put it into practice, to improve your database efficiency and effectiveness.
相關(guān)問題拓展閱讀：
- 看別人設(shè)計數(shù)據(jù)庫表 主表叫 a表 子表一半都叫 a_sub , sub是什么?
看別人設(shè)計數(shù)據(jù)庫表 主表叫 a表 子表一半都叫 a_sub , sub是什么?
應(yīng)該是英文：
subsidiary
的簡寫。逗攔
英 美
adj.附帶的，附屬的，次要的;助的，幫助的;補派指橋足的
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網(wǎng)站欄目：學(xué)習(xí)數(shù)據(jù)庫時需掌握的基本詞匯數(shù)據(jù)庫表英語(數(shù)據(jù)庫表英語)
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