databases and data collection

Ngày tải lên: 20/02/2014, 05:21

Ngày tải lên: 06/03/2014, 15:20

Ngày tải lên: 20/06/2014, 08:20

Ngày tải lên: 22/06/2014, 12:20

... KDD Knowledge 1 2 3 4 5 Data cleaning Data warehouse Task relevant data Data mining Pattern Evaluation selection Data integration Định nghĩa Kho Dữ Liệu (tt) • Theo Pandora, Swinburn University ... Dữ liệu tổng hợp 65/12/2009 Biến thời gian 9 • Data • Time • 01/97 • 02/97 • 03/97 • Data for January • Data for February • Data for March • Data • Warehouse 5/12/2009 Ổn Định • Là lưu trữ ... mối kết hợp nếu một khách hàng mua X, người đó cũng sẽ có mua Y. Hình thức LHS (left-hand side), RHS (righthand side). • Thiết lập LHS ∪ RHS được gọi là tập các hạng mục (itemset). 195/12/2009 145/12/2009 OLAP...

Ngày tải lên: 18/01/2013, 16:15

Ngày tải lên: 29/08/2013, 13:44

... with a z. LESSON 15 ■ THREADS, DAEMONS, AND GARBAGE COLLECTION7 6 6250CH15.qxd 2/22/06 5:00 PM Page 76 Event Handling J ava separates event handling and the GUI (either AWT or Swing). This separation ... these event handling classes. If you key this code in and run it, you should see the window shown in Figure 17-1. Figure 17-1. Handling our events We’ve managed to put some event handling code ... business logic and the presentation logic. In the SAP world, your coding will mostly be JSPs, servlets, and EJBs. However, you should know how to code presentation-side Java, and to do that...

Ngày tải lên: 05/10/2013, 10:20

... succeeds, the database handle is returned immediately. If there is no appropriate database handle, or if the ping( ) method fails, Apache::DBI establishes a new connection, stores the handle, and then returns ... 20 CHAPTER 20 Relational Databases and mod_perl Nowadays, millions of people surf the Internet. There are millions of terabytes of data lying around, and many new techniques and technologies have ... spoon-feed you the data as you use it, the server process must buffer the data, tie up that thread, and possibly keep database locks open for a long time. So if you read a row of data and ponder it...

Ngày tải lên: 24/10/2013, 08:15

... UML. Database The Database is the system for data storage and controlled access to stored data. It is the biggest element a data model supports. The relational database is the standard database ... relational and object relational databases 1 from business requirements through the physical data model. However, modeling of the physical data model must express a detailed description of the database. ... columns, and unique columns. They can also contain a default value. Constraints can be checked for any column. Datatype Supporting relational databases requires the support of standard datatypes. Examples...

Ngày tải lên: 10/12/2013, 15:15

... Understanding Data Sources and Data Formats A data source is a place from which Flash can load external data (that is, data not directly programmed into the movie). For example, Flash can load data ... load data from a simple text file, and that text file is considered a data source. Data transfer is the act of retrieving data from a source or sending data from Flash to another application. ... learn about the different types of data sources as well as the Flash objects and methods used to communicate with these sources in the data transfer process. Any data that you plan to load into...

Ngày tải lên: 14/12/2013, 22:15

... appears displaying a tree view of data sources. Expand the Other Data Sources node, expand Project Data Sources, expand NorthwindDataSet, expand NumProductsTable, and then click NumProducts. This ... Properties window, click the DataSource property. Click the drop-down menu that appears. Expand Other Data Sources, expand Project Data Sources, expand NorthwindDataSet, and click Suppliers. This ... populating a DataTable object with the rows retrieved from the database: the Fill method which expects an existing DataTable or DataSet as a parameter which is filled with the data, and the GetData...

Ngày tải lên: 15/12/2013, 00:15

... purely to act as a holder of utility methods and fields. A static class cannot contain any instance data or methods, and it does not make sense to try and create an object from a static class by ... methods, and called both of these types of methods. You have also implemented instance and static fields. You have seen how to make fields and methods accessible by using the public keyword, and ... program and return to Visual Studio 2005. Congratulations. You have successfully created a class, and used constructors to initialize the fields in a class. You have created instance and static...

Ngày tải lên: 15/12/2013, 00:15

... Industry understanding in the past – BI-DWH is about bank profitability & risk, retention and acquisition, not just reporting – Understanding your customer (customer data) , automation and integration ... understand what is being done with their products and services and how they impact a customer’s life and lifestyle. • Accelerate decision time make analytic-based decisions in seconds and pervasive ... Engine Security? • Protracted and complex implementation • Escalating maintenance costs • Poor and incomplete BI solution Query & Analysis Mining Engine Database Database OLAP Engine Analytic...

Ngày tải lên: 20/12/2013, 17:15

... experience and that they form the fundamental basis for understanding vector algebra and calculus. While the notions of set and group theory are not directly required for the understanding of ... the material on tensors is irrelevant and will skip it. Certainly it is not necessary to understand covariance and contravariance or the notion of tensor and vector densities in order to numerically ... gravitational, electric, and magnetic fields in physics. Here one is describing scalars and vectors whose elements are real numbers and for which there are laws of addition and multiplication which...

Ngày tải lên: 20/12/2013, 19:15

... Use Cases and Data Requirements In this activity, you will analyze a set of use cases derived from the Ferguson and Bardell, Inc. case study and determine data requirements, hidden data requirements, ... Activity 3.1: Identifying Data- Related Use Cases and Data Requirements 9 Exercise 2: Identifying Hidden Data Requirements In this exercise, you will identify the hidden data requirements related ... Activity 3.1: Identifying Data- Related Use Cases and Data Requirements Exercise 1: Identifying Use Cases that Require Data In this exercise, you will identify data requirements from the...

Ngày tải lên: 21/12/2013, 06:16

... Descriptions and Data BĆ19 S_ITEM Table continued Table Descriptions and Data BĆ17 S_ITEM Table continued SQL> SELECT * FROM s_item; Continued on Next Page Table Descriptions and Data BĆ9 S_EMP ... Page Table Descriptions and Data BĆ21 S_ORD Table continued SQL> SELECT * FROM s_ord; Table Descriptions and Data BĆ15 S_INVENTORY continued Introduction to Oracle: SQL and PL/SQL Using Procedure ... Descriptions and Data BĆ25 S_REGION Table SQL> DESCRIBE s_region Name Null? Type ID NOT NULL NUMBER(7) NAME NOT NULL VARCHAR2(50) SQL> SELECT * FROM s_region; Table Descriptions and Data BĆ13 S_INVENTORY continued Continued...

Ngày tải lên: 21/12/2013, 06:17

... KRONE HIGHBAND ™ Voice and Data Patchcords ...

Ngày tải lên: 21/12/2013, 18:15

Ngày tải lên: 22/12/2013, 12:16

... voice and data to a common transmission facility is at the forefront of development and marketing at all leading data networking and telecommunications equipment providers, as well as carriers and ... data be placed in variable length datagrams or packets. Addressing and control information is then attached to each datagram and is sent through the network and forwarded, hop-by-hop toward its Page ... increased network bandwidth, the ubiquity of the Internet and IP capable networks, and, of course, marketing hype. Cisco was quick to forecast this trend and began acquiring technology and expertise...

Ngày tải lên: 15/01/2014, 16:42

... left hand and another on your right hand. How many ways can this be done? First, suppose that you wear the diamond ring on your left hand. Then there are three rings available for your right hand: ... representation, the random variable X 1 counts the number of Heads observed on the first toss and the random variable X 2 counts the number of Heads observed on the second toss. The sum of these random variables, ... of the Kolmogorov probability model and that contains every interval of the form (−∞, y]. This collection is called the Borel sets and it is a very large collection of subsets of . In particular,...

Ngày tải lên: 16/01/2014, 16:33