describing exploring and comparing data

... contributed to the conception and the design of the study, analyzed the data and drafted the manuscript UR contributed to the conception and the design of the study TB acquired the data IK contributed ... nycthemeral rhythm and not in total numbers; so we normalize the data by dividing the number of crimes at “day” d and hour h by the number of crimes on “day” d The normalized data are called y ... Canova-Hansen [41] test and a Kwiatkowski-Phillips-Schmidt-Shin test [42] We also divided the data in 10 disjoint random subsamples to avoid testing hypotheses suggested by the data Applying the detection...

Ngày tải lên: 10/08/2014, 09:20

Ngày tải lên: 06/12/2016, 16:10

... trợ giải pháp máy chủ standby RDBMS and Data Management/ Session 7/18 of 25 Nhóm tập tin ghi vết giao dịch  Thêm tập tin ghi vết vào sở liệu Cú pháp: ALTER DATABASE database_name { } [;] ::= ... tạo Cú pháp: CREATE DATABASE database_snapshot_name ON ( NAME = logical_file_name, FILENAME = ‘os_file_name’ ) [ , n ] AS SNAPSHOT OF source_database_name [;]  RDBMS and Data Management/ Session ... liệu khơng có file giao dịch RDBMS and Data Management/ Session 7/14 of 25 Nhóm tập tin ghi vết giao dịch  Thêm nhóm tập tin tạo CSDL Cú pháp: CREATE DATABASE database_name [ ON [ PRIMARY ] [...

Ngày tải lên: 01/09/2012, 09:09

... XML for the data content of an existing DataSet instance, call its WriteXml method, passing an output file name C# DataSet infoSet = new DataSet(); // - Add tables, relations, and data, then ... format Reading XML Both the DataSet and DataTable classes include ReadXml and ReadXmlSchema counterparts to the XML-writing methods To use them, create a new DataSet or DataTable instance; then ... XmlReadMode.ReadSchema  Reconstructs the DataTable members of the DataSet without loading in the data Chapter 7  Saving and Restoring Data 111 ■■ XmlReadMode.IgnoreSchema  Loads in the data, ignoring any schema...

Ngày tải lên: 03/10/2013, 00:20

Ngày tải lên: 25/10/2013, 18:20

... that uses SQL_DMO to extract the data from the database and transform the data into standard electronic data interchange (EDI) files Answer: A Explanation: The data will be published at the company’s ... for this database and then add the size of the model database All new databases are based on the model database The model database has an initial size of MB A quick estimate of the user data of ... queries and determine which indexes should be created on a table and to select and create an optimal set of indexes and statistics for a SQL Server 2000 database without requiring an expert understanding...

Ngày tải lên: 04/11/2013, 16:15

... 12.7 Icons relevant to External Data 195 CHAPTER 13 13.1 Data from the Internet 195 READING ASCII TEXT DATA 198 Understanding ASCII Text data 199 Why is data stored and distributed in this format? ... “1995,” “2000” and “2010”) 2.2.A NEW DATA You can enter the data for a new case/row by clicking on “New” and typing in the data for the first series, pressing the “TAB and then entering the data for ... Two Roles Of Data/ Form 38 CHAPTER 3.1 REDUCING ERRORS IN DATA ENTRY— VALIDATION AND AUTOCORRECT 40 Validating Data During Data- Entry 40 3.1.a 3.1.b 3.1.c 3.1.d Validation for numeric data 42 Message...

Ngày tải lên: 09/12/2013, 15:15

... my C:\ drive and typed in backup and sure enough, my Windows 95 box had a backup utility and it worked We were able to make a “backup” of Perl and write it to a couple floppies and restore it ... understand the threats and have a chance at finding them Let’s learn a bit more about how data can be hidden on a computer system It makes sense for attackers or criminals to hide files and data ... with Windows and Unix OS • Viruses: File Infector and Boot Record Infector, Macro • Tools like CHKDSK and MEM may help locate malicious code • Files in DOS and Unix can be hidden and found using...

Ngày tải lên: 10/12/2013, 14:16

... for backing up and restoring data Module 10: Backing Up and Restoring Data Introduction to Backing Up and Restoring Data Slide Objective Backup To introduce backing up and restoring data Lead-in ... topics and objectives ! ! Backing Up Data ! Restoring Data ! In this module, you will learn how to back up and restore data Preparing to Back Up Data ! Lead-in Introduction to Backing Up and Restoring ... lost and corrupt data A user must have the appropriate user right or permission to back up and restore data Permissions and User Rights Are Required to Back Up and Restore Restore Restore Data...

Ngày tải lên: 10/12/2013, 16:15

... the skills to group and summarize data by using aggregate functions These skills include using the GROUP BY and HAVING clauses to summarize and group data and using the ROLLUP and CUBE operators ... the skills to group and summarize data by using aggregate functions These skills include using the GROUP BY and HAVING clauses to summarize and group data and using the ROLLUP and CUBE operators ... summarize data by groups ! Use the ROLLUP and CUBE operators and GROUPING function to generate summary data ! Use the COMPUTE and COMPUTE BY clauses to generate control-break reports, grand totals, and...

Ngày tải lên: 11/12/2013, 14:15

... between data- driven and business-driven APIs and explains when one model is preferable over the other It then explains how constraint modeling fits into the data binding picture and how data binding ... open source data binding API, and this chapter details its ins and outs You'll see that Quick offers ideas and processes that are entirely different from most data binding frameworks and you'll ... Command lines and options that should be typed verbatim Names and keywords in Java programs, including method names, variable names, and class names XML element names and tags, attribute names, and...

Ngày tải lên: 12/12/2013, 11:15

... FK_Orders_Customers Null Values Databases must also provide the ability to handle values that are not set, or are otherwise unknown Unknown values are called null values, and a column is defined as ... the candidate column for an index should be used to store a wide range of values A good candidate for indexing would be a column containing a unique number for each record, while a poor candidate ... (922,337,203,685,477.5807), with an accuracy to one ten-thousandth of a monetary unit Monetary data value from -214,748.3648 to 214,748.3647, with an accuracy to one ten-thousandth of a monetary unit Floating-point...

Ngày tải lên: 14/12/2013, 13:15

... refer to variables by the first part name and the question mark Thus, if we type a command using GDP? EViews uses all three GDP series for the USA, Canada, and Mexico Notice the button PoolGenr PoolGenr ... coefficients and intercepts Even though you may fail to reject the hypotheses that represent restrictions that you impose, the hypotheses may not be perfectly true, and that may affect the estimators and ... Hypothesis Testing In panel data models (as in single-equation multiple-regression models) we are interested in testing two types of hypotheses: hypotheses about the variances and covariances of the...

Ngày tải lên: 20/12/2013, 18:15

... my C:\ drive and typed in backup and sure enough, my Windows 95 box had a backup utility and it worked We were able to make a “backup” of Perl and write it to a couple floppies and restore it ... understand the threats and have a chance at finding them Let’s learn a bit more about how data can be hidden on a computer system It makes sense for attackers or criminals to hide files and data ... with Windows and Unix OS • Viruses: File Infector and Boot Record Infector, Macro • Tools like CHKDSK and MEM may help locate malicious code • Files in DOS and Unix can be hidden and found using...

Ngày tải lên: 21/12/2013, 05:16

... data from, modify data in, and update data sources The DataSet Class The DataSet is a collection of DataTable objects that represent the underlying data of a data source A DataSet has zero or ... disconnected data (such as the DataSet class) System .Data. Common Contains utility classes and interfaces that the data providers inherit and implement System .Data. SqlClient Contains the SQL Server NET data ... Description DataColumnCollection DataColumn The DataColumn object contains data that describes the data in the column (metadata): the column name, the data type, whether the column can be NULL, and so...

Ngày tải lên: 21/12/2013, 19:15

... AddModifyAndRemoveDataRowViews { public static void DisplayDataRow( DataRow myDataRow, DataTable myDataTable ) { Console.WriteLine("\nIn DisplayDataRow()"); foreach (DataColumn myDataColumn in myDataTable.Columns) ... ADDMODIFYANDREMOVEDATAROWVIEWS.CS /* AddModifyAndRemoveDataRowViews.cs illustrates how to add, modify, and remove DataRowView objects from a DataView */ using System; using System .Data; using System .Data. SqlClient; ... SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet(); mySqlConnection.Open(); mySqlDataAdapter.Fill(myDataSet, "Customers"); mySqlConnection.Close(); DataTable...

Ngày tải lên: 24/12/2013, 01:17

... Northwind Access database using an OleDbConnection object and retrieve a row from the Customers table Notice that you use an OleDbCommand and OleDbDataReader object to run a SQL statement and read the ... OleDbConnection(connectionString); // create an OleDbCommand object OleDbCommand myOleDbCommand = myOleDbConnection.CreateCommand(); // set the CommandText property of the OleDbCommand object to // a SQL SELECT statement ... // create an OleDbDataReader object and call the ExecuteReader() // method of the OleDbCommand object to run the SELECT statement OleDbDataReader myOleDbDataReader = myOleDbCommand.ExecuteReader();...

Ngày tải lên: 24/12/2013, 01:17

... sorts the data in DataTable objects in the DataSet The DataViewManager can simplify working with multiple views within a DataSet, but is not required The DataViewManager object exposes a DataViewSettingCollection ... dvm.DataViewSettings[ORDERS_TABLE].RowFilter = employeeIdFilter; // Bind the DataViewManager to the grid dataGrid.SetDataBinding(dvm, CUSTOMERS_TABLE); } Discussion The DataView filters and sorts ... private DataSet ds; // private void FilterSortForm_Load(object sender, System.EventArgs e) { ds = new DataSet( ); SqlDataAdapter da; // Fill the Customers table and add it to the DataSet da...

Ngày tải lên: 24/12/2013, 05:15

Ngày tải lên: 24/12/2013, 06:17

... between data- driven and business-driven APIs and explains when one model is preferable over the other It then explains how constraint modeling fits into the data binding picture and how data binding ... open source data binding API, and this chapter details its ins and outs You'll see that Quick offers ideas and processes that are entirely different from most data binding frameworks and you'll ... Command lines and options that should be typed verbatim Names and keywords in Java programs, including method names, variable names, and class names XML element names and tags, attribute names, and...

Ngày tải lên: 19/01/2014, 16:20