titanic dataset

Under my directory: Web Crawler by myself # self-crawled Data Set CN 5 depth # The data set crawled using nutch 0.7.2 is restricted to the CN domain, includes links and text cn-2010-01-01 # crawls a dataset with nutch 0.7.2, which is restricted to the CN domain, including links and text dlut.edu. cn2010-01-01 # Use the dataset crawled with nutch 0.7.2 to restrict linkexchange 2010-09 In the dlut.edu.cn doma

The DataSet class is one of the most core members of ADO, and is the most frequently exposed class for developing database applications based on the. NET Platform programming language. Each dataset has a lot of datatables and relationships. Relationship should also be a kind of table, especially, this table is only used to contact two data tables. Each DataTable has many DataRows and Datacols, and also incl

Use datareader or dataset? We often hear people ask this question: "in ASP. NET web applicationsProgramShould I use the datareader class or the dataset class ?" In manyArticleAnd I often see this misunderstanding in the newsgroup posts, that is, the datareader (abbreviation of sqldatareader or oledbdatareader) is better than dataset. Sometimes I see the opposi

Method 1: Create a DataSet object Dataset DS = new dataset (); Dataset DS = new dataset ("datasetname ");2. Fill dataset with a dataset The most common method is to fill the data with d

use of DataSet classes in C # The DataSet class is one of the most central members of the Ado.net, and it is the most frequently contacted class for developing database applications based on the. NET Platform programming language. Each dataset has a lot of datatables and relationships. Relationship should also be a kind of table, in particular, this table is on

I often hear this question: "should I use the DataReader class or the DataSet class in ASP. NET Web applications ?" I often see this misunderstanding in many articles and newsgroups, that is, the DataReader (abbreviation of SqlDataReader or OleDbDataReader) is better than DataSet. Sometimes I see the opposite. In fact, Microsoft has created these two data access classes because they are all what we need. Ea

I. disadvantages of weak DataSet:1. It can only be referenced by column names, dataset. tables [0]. rows [0] ["Age"]. If the column name is incorrectly written and compiled, no error is found. Therefore, you must remember the column name during development.2. int age = Convert. toInt32 (dataset. rows [0] ["Age"]), the value of the obtained field is of the object

Dataset and datatable Each dataset is a collection of one or more able objects (datatable is equivalent to a table in the database). These objects are composed of datarow, datacolumn, and columnname) item, and the relationship (Relations) related to the data in the datatable object and the data display sorting (dataview) information. Difference between dataset a

[Size = x-large] using system; Using system. Collections. Generic; Using system. text; Using system. Data; Using system. Windows. forms; Using system. reflection; Namespace DMS{/// /// C # Excel operations/// Class exceloperate{// Method 1 // Public bool datasettoexcel (Dataset dataset, bool isshowexcle)//{// Datatable = dataset. Tables [0];// Int rownumber = d

HTML5 Description of custom attributesThe "28 HTML5 features, tricks and techniques you must know" article in the previous translation of the custom legal attributes in HTML5 data- has been introduced, that is, in HTML5 we can use data- the prefix to set the custom properties we need to do some data storage, For example, we want to store the corresponding ID on a text button:TestThe data- prefix is called data属性 , which can be defined by a script, or the CSS property selector can be applied to s

Excerpt from: http://www.cnblogs.com/zhjjNo1/archive/2009/08/26/1554420.htmlThe first kind of explanationThe biggest difference between the DataReader and the DataSet is that when DataReader is used, it always occupies SqlConnection (commonly known as: non-disconnected), and when you operate the database online, Any operation on SqlConnection throws an DataReader exception. Because DataReader only loads one piece of data in memory at a time, the memor

When we operate on the database, we always take the data out of the database, then put it in a "container", and then the data from the "container" is displayed in the foreground, and the role of this container is a dataset is the most common and important, It can be said that datasets play a role in the database and the foreground.Let's talk about the use of datasets. (TheDataSet object itself is not the ability to access the database, it should be us

1. Dataset ObjectL And sqldatareader Object comparisonSqldatareader is a fast and efficient structure for obtaining query results. It only supports Reading query results one way forward and the data is read-only. Dataset allows you to view query results cyclically and cyclically, and supports sorting, searching, and caching and modifying data. L DataSet object me

LINQ to Dataset In addition. net integration, through ADO. net to obtain data, and then query the data through LINQ, so as to implement complex query of the Data. To be understood as querying the data saved in dataset through LINQ, generally, den provides the following steps: 1.Obtain the dataset or datatable Data Source, LINQ to

I often hear people ask this question: "Should I use a DataReader class or a DataSet class in a ASP.net Web application?" "I often see this misconception in many articles and newsgroup postings that DataReader (SqlDataReader or OleDbDataReader abbreviations) are better than datasets. Sometimes I also see the opposite story. In fact, Microsoft created the two data access classes because they were all we needed. Each class has its advantages and disadva

Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->private void DemonstrateReadWriteXMLDocumentWithStreamReader(){// Create a DataSet with one table and two columns. DataSet OriginalDataSet = new DataSet("dataSet"); OriginalDataSet.Namespace= "NetFrameWork";

: xmlnodelist xnl = xmldoc. selectsinglenode ("Bookstore"). childnodes; Foreach (xmlnode Xn in xnl){Xmlelement Xe = (xmlelement) xn;If (Xe. getattribute ("genre") = "Fantasy "){Xe. removeattribute ("genre"); // Delete genre attributes}Else if (Xe. getattribute ("genre") = "Update lizanhong "){Xe. removeall (); // delete all content of the node}}Xmldoc. Save ("Bookstore. xml "); The final result is:Corets, Eva5.954. display all data. Copy code The Code is as follows: xmlnode xn = xmldoc.

Explanation 1 Datareader And Dataset The biggest difference is that , Datareader Always in use Sqlconnection (commonly known as non-disconnected connection ), When you operate databases online, Any pair Sqlconnection Will cause Datareader Exception . Because Datareader Load only one piece of data in the memory at a time , Therefore, the occupied memory is very small. Because Datareader Special and high performance, So Datareader

We have already discussed how to operate databases, but almost all of them are done through oledbcommand and oledbdatareader. This time we will talk about how to operate databases through oledbdataadapter! We have already discussed the use of oledbdataadapter before. Because oledbdataadapter is a bridge between dataset and the data source, dataset is used to store, remotely process, and program single-layer

. eventhandler (this. button#click );This. btnaddforeign. Click + = new system. eventhandler (this. btnaddforeign_click );This. btnupdatemid. Click + = new system. eventhandler (this. btnupdatemid_click );This. button2.click + = new system. eventhandler (this. button2_click );This. btnupdateds. Click + = new system. eventhandler (this. btnupdateds_click );This. Load + = new system. eventhandler (this. page_load ); } private void btncreate_click (Object sender, system. eventargs e) { datatable d