sparcs data dictionary

Select * from dictionary; -- Data Dictionary A data dictionary is a place where Oracle stores database information. It is used to describe data. For example, the Creator information, creation time information, tablespace informati

Kent PengReprint Please specify source: http://www.cnblogs.com/xieyupeng/p/7145599.htmlFirst, new customers 1. Data dictionaryDictionary items used to enumerate a limited number of items(1) The relationship between the data dictionary and other tables in the table:To build a table statement:CREATE TABLE' base_dict ' (' dict_id ' )varchar( +) not NULLCOMMENT'Data

What is Data Dictionary Each Oracle database contains a collection called "metadata", or data used to describe the database's data structure. Tables and views that contain the metadata are called ORACLE data dictionaries.Tables with the prefix v $ or GV $ in the

As the name implies, a dictionary is like a dictionary used in reality. When a word or word does not understand it, it is used to look up the dictionary. the dictionary contains the language information we use. data is also loaded with a lot of

Data dictionary generation tool journey (1): helpful for Generating tools Recently, we found a very low efficiency when doing our company's demand. When creating a table, we need to use our own modeling tools to create a table, copying and pasting a field is unacceptable. So I developed a tool to solve this inefficiency. As the opening part, we will preview the entire overview of the tool! Reading director

the value of key is the set typec['a'].add (1) c['a'].add (2) c['a'].add (2) c['b'].add (4)Print('the value of key is a dictionary of the list type:', D)Print('the value of key is a dictionary of the set type:'C>>> ================================ RESTART ================================>>>the value of key is a dictionary of list type: Defaultdict (class 'List',

Oracle Data Dictionary Overview Data dictionary is an important component of Oracle databases. It is a set of read-only tables used to record database information. The data dictionary contains: Definition of all schema objects i

Oracle Data dictionary is a place where Oracle stores information about some databases. Oracle Data Dictionary is mainly used to describe related data. For example, information about the creator of a table, creation time, tablespace, and user access permission. Oracle Databa

Summary:Python basic one data type dictionary, this article mainly speaks the dictionary.1, define Dictionary2, the basic knowledge of the dictionary3, the method of the dictionary1, define Dictionary1, define 1 empty dictionariesDict1 = {}2, define DictionaryDict1 = Dict (x=10,y=10)3, converting the list to a dictionaryDict1 = Dict ([' A ', ' Ten '), (' B ', 10)

First, what is a dictionary1. The dictionary is the only type of mapping in Python, consisting of key-value pairs enclosed in {},2. The key of the element in the dictionary: must be a hash immutable data type that can be used as a key in the dictionary3. The value of the element in the dictionary: there is no limit to