Information related to dictionaries, metadata and data dictionaries

Data Dictionary. A database management system used to store descriptive information about data objects in a database.

key attributes, etc. (Actually, it's the properties of the table).

Information related to the description of the view.

Information about the storage structure and storage method of the relationship.

Information related to integrity constraints.

Security-related information (permissions for various types of users to operate the database).

Many sideways: Eve.

Tang Rhyme", "Set Rhyme", "Rhyme Meeting", "Positive Rhyme" are auspicious and easy to cut, and the sound seat. Morning right, twilight also. "Shangshu Biography" is the eve of the year, the night of the month, the eve of the day, the wax is the eve of the year, the obscurity is the night of the month, and the day is the day and the night.

Poetry Xiaoya" to eternal tonight. I saw the morning again, and the evening saw the night. "Jin Yu" Pinggong shoots the eagle and does not die, so that the vertical Xiang fights and loses.

The public is angry, and he will kill him, and his uncle will hear about it. "Note" is seen in the court to admonish also. Tanabata again.

Qi Harmonic Ji "Guiyang Wuding has a fairy road, and the younger brother said: July Qixi Festival, the Weaver Girl should cross the river and temporarily pray for the morning glory. "Jing Chu Years Chronicles" Qixi Festival, women tie the color building, melon and fruit garden, wear seven-hole needles to beg.

Liu Zongyuan has a beggar writing. Also official name. Xiyun, Han system, to the Yellow Gate.

Also place names. "Zuo Chuan: Nineteen Years of Zhuang" Chu Zi died, and he was buried in the Zhuxi room. Also the name of the mountain.

The Classic of Mountains and Seas" is the mountain of Hun Xi. and the mountain of Cao Xi. Another surname.

Look out of Ba County. See Genealogy. Diagonal also.

Lu Lan is sitting in the evening room, saying that the room is oblique and sitting upright. And with the past. "Zhuangzi Heavenly Fortune" is sleepless in the past.

And the leaves are in Jue Che, and the sound is clear. Jujuku also. "Poetry Qi Feng" Qi Zi Xi.

Lu Deming Shu" is also in the court. The leaves are thin. "Sayings" has been seen since the beginning of the month.

Xu said" Half of the word month, the first month of the month is to see the West at dusk, so the half moon is the night.

In a broad sense, bai

The data dictionary should be du

Belongs to metadata. Of course, in the general sense of the word, the meta-number special evidence is mainly about the data genus.

It is used to describe data accuracy, data **, data projection coordinate system, data acquisition and production mode, data production time, data main production process and other information, data format description, data use range annotation and so on. With metadata, there is a guarantee of instructions when sharing information, similar to the instructions in the drug label. The data dictionary can already be regarded as the data itself, which is usually mainly used to explain the meaning of data structures such as data tables and data fields, the value range of data fields, the meaning of data values, and so on.

A dictionary is a reference book that provides words with phonology, explanations of meaning, example sentences, usage, and so on. In the West, there is no dictionary concept, it is all unique to China. The dictionary mainly collects words, but also collects words.

Dictionaries or dictionaries mainly accept words, and they also accept words. In order to meet the needs of social development, the number of dictionaries has increased dramatically, and dictionaries for different objects, industries and purposes have been developed. With the absorption of encyclopedic elements, there is also the emergence of encyclopedic dictionaries.

A dictionary is a reference book that arranges words in a certain order and explains them separately. After the rise of information theory, the concept of dictionaries has expanded. Where there is information in a discipline, it is necessary to compile a dictionary for easy retrieval, so the dictionary is synonymous with the storage and arrangement of knowledge.

Lexicography and "dictionaries" belong to the same lexicography as "difficult words", "vocabulary", "index of famous works or famous words", and "classified words"; In ancient China, there were titles such as "Ziyuan", "Zitong", and "Zijian", and "Zishu" was the general name.

Some words can't be found in the dictionary, because the dictionary is checked one by one, there is no separate word, the dictionary is divided into many categories, synonyms, antonyms, etc., the dictionary has only one category, which is to look up Chinese characters Thank you!! Adopt mine.

"Words" means "words, words"; "Ci" means "rhetoric, rhetoric".

Dictionaries are mainly explanations of "words and words", while dictionaries not only explain "words and words", but also touch on the use in different contexts, and the scope of interpretation is wider.

Words and words are consent words in the sense of "words" and can be used interchangeably.

In ancient times before the Han Dynasty, people generally only said "ci" and not "words". After the Han Dynasty, "words" were gradually used as "words".

In fact, there are subtle differences between words and words. The ancient writing of "ci" is "辤", that is, "subject" + "xin". Xin, the big crime, so "Xin" originally meant to defend a lawsuit and fight a lawsuit. Later, it was extended to mean "confession, decree".

Therefore, strictly speaking, "words" are more serious and formal than "words".

An active data dictionary is a data dictionary whose contents can be automatically updated and dismantled by the DBMS when modifications are made to the database or application structure. A passive data dictionary is a data dictionary whose contents must be manually updated when modified.

The Xinhua dictionary contains a total of about 8,500 words, and more than 3,200 polyphonic words and phrases are added under the explanation of the words. All Chinese characters can be found there.

Xinhua Dictionary is the first small dictionary in China arranged in the phonetic order of Hanyu Pinyin. In 1953, he was edited by Xinhua Dictionary Press, and the editor-in-chief was Wei Jiangong (1901-1980), a linguist. In 1953, the first edition was printed by the People's Education Publishing House, arranged in alphabetical order; It was subsequently revised to use the alphabetical order of Hanyu Pinyin, and was rearranged and published by the Commercial Press.

Xinhua Dictionary is the first dictionary published after the founding of the People's Republic of China with vernacular definitions and examples in the vernacular, and it is also the most influential and authoritative small Chinese dictionary so far, which can be called a model of small Chinese dictionaries.

The 11th edition of Xinhua Dictionary was published in July 2011. In the latest version of the Xinhua Dictionary, more than 800 new orthography prefixes have been added. In addition, more than 1,500 traditional characters and more than 500 variant characters have been added.

This dictionary is quite innovative, and its main features are as follows:

1. The whole book is arranged in alphabetical order, and the "Radical Checking Table" is attached. The radicals used in the book are basically the same as those used in the general dictionary, but with slight changes, and there are 189 books in total.

For example, the old dictionary of the meat, the bow, the high, the drum, the Qi, the turtle, etc., are all provincial, and some of the old dictionaries according to the "Shuowen Jiezi", the writing of the seal script is not distinguished, this dictionary is divided into two parts according to the writing of the regular script, such as "knife" and "刂", "fire" and "灬", "heart" and "忄", "water" and "氵", easy to check. This approach is unprecedented in the Chinese dictionary.

2. There are about 8,500 single words received, and more than 3,200 polyphonic words and phrases are added under the single word explanation. Polyphonic words and phrases are marked so that they serve as simple dictionaries.

3. In the paraphrasing, the extended meaning, the figurative meaning and the escape are marked respectively, so that readers can further understand the relationship between different semantic transformations of polysemous words, which is quite useful for the study of the development of word meaning. This is the editor's intention, and it is something that no other dictionary has.

4. The first edition of this dictionary has a lot of illustrations of famous objects, which makes it easier for the reader to understand what is explained (later rearranged and deleted).

How many Chinese characters are included in the Xinhua dictionary in total?

A: From more than 8,000 words in the first edition to more than 11,200 words in the latest edition.

Can all Chinese characters be found there?

A: No, you cannot. If you want to find a dictionary of all (not all, only the most) Chinese characters, you can currently check the "Chinese Dictionary", which contains about 56,000 Chinese characters.

How much is included in the Xinhua Dictionary? Can you find all the Chinese characters over there, and some of them are here?

The latest edition should be the 2004 edition, that is, the 10th edition, which contains more than 11,200 characters, and not all Chinese characters can be found there, like some old and obscure characters will not be included.

The latest version [98 edition] includes more than 10,000 words [including traditional and variant characters], more than 3,500 polyphonic words with annotations, 9 appendices, and 9 illustrations. All Chinese characters can be found there.

Diotan do Lube: In the database, the data dictionary.

describes the structure of a set of tables, views, and indexes. Data dictionary information is usually stored in the system table in the database. Tables describe the structure of user data.