building a database that maximizes performance

Ngày tải lên: 25/01/2014, 05:20

... is a set of rules that Access enforces to maintain consistency between related tables when you update data in a database • The Relationships window illustrates the relationships among a database s ... Fields tab, allows you to add a group of related fields to a table at the same time, rather than adding each field to the table individually • The group of fields you add is called a Quick Start ... Organize each piece of data into its smallest useful part • Group related fields into tables • Determine each table’s primary key • Include a common field in related tables • Avoid data redundancy...

Ngày tải lên: 24/10/2014, 15:10

... in Calgary Canada is one country that has no shortage of land Its population base is small compared with the acreage in the country Fly into Alberta and look at the vast stretches of land adjacent ... Scott Haggins can talk for hours about the back corners of the industry in Calgary, Alberta, and all of Canada That is because they are out every day dealing with the details of what it takes to ... eight criteria: Analysis of company performance a Current b Historical Analysis of competition Analysis of market share Analysis of mission a Implied tasks b Mission capability Analysis of existing...

Ngày tải lên: 24/10/2013, 09:20

... Latin America Anguilla, Antigua and Barbuda, Argentina, Aruba, Bahamas, Barbados, Belize, Bermuda, Bolivia, Bonaire, Brazil, Cayman Islands, Chile, Colombia, Costa Rica, Cuba, Curacao, Dominica, ... Dominican Republic, Ecuador, El Salvador, Falkland Islands, French Guiana, Grenada, Guadeloupe, Guatemala, Guyana, Haiti, Honduras, Jamaica, Martinique, Mexico, Montserrat, Nicaragua, Panama, Paraguay, ... Zimbabwe Asia Afghanistan, Australia, Bangladesh, Bhutan, Brunei, Cambodia, China, Cook Islands, Fiji, French Polynesia, Guam, Hong Kong, India, Indonesia, Japan, Kiribati, Laos, Macao, Malaysia,...

Ngày tải lên: 20/02/2014, 05:20

... never before What is a Spatial Database? Database that: • Stores spatial objects • Manipulates spatial objects just like other objects in the database What is Spatial data? • Data which describes ... • Spatial databases were born when people started to treat spatial information as first class database objects Advantages of Spatial Databases Able to treat your spatial data like anything else ... data and spatial databases • Adding spatial extensions to PostgreSQL • OpenGIS and standards Why PostGIS? • There aren’t any good open source spatial databases available • commercial ones are very...

Ngày tải lên: 20/02/2014, 05:21

... real world value Thus, a null value is practically a declaration of the unsoundness of a particular data value The Closed World Assumption states that a database contains all the data that it attempts ... Section 3.2 PANORAMA: A DATABASE SYSTEM THAT ANNOTATES ITS ANSWERS 63 In addition, Panorama extends the query language with three statements to manipulate and query the meta -database To add a new property ... database may suggest additional characterizations of the extensional answer If this intensional information is extracted, database values may gain additional meaning Thus, a database query may be answered...

Ngày tải lên: 16/03/2014, 16:20

... for  Ba  Vi in  ArcView  includes  data  collection,  data  input,  data  management, data analysis and data output.  The data collection involved surveying and  collecting  available  data  and  ... Vi can be found at both the district departments  and the national park management board. This  study is an attempt to deal with such a problem  by creating a GIS database that allows efficient  ecotourism  related  data  input,  management,  ... Fig. 3. An attribute table in the database.     Fig. 4. A satellite image theme in the database.     Fig. 5. A ground photo of tree ferns in Ba Vi National Park.  The database meets the needs of spatial and ...

Ngày tải lên: 28/03/2014, 15:20

... behavior can be dramatic Lawsuits often take on a life of their own and can be much harder to stop than to start This kind of battle can lead to escalating costs, a dramatically reduced standard ... only on parenting issues, you may find that many of the | building a parenting agreement that works fi ­ nancial issues are easier to tackle and resolve when you start with an agreement that serves ... The American Academy of Child and Adoles­ cent Psychiatry (AACAP) recommends that parents step back and consider how their divorce may impact their children—and find ways to talk to children that...

Ngày tải lên: 18/04/2014, 14:03

... me start with what’s good about this page The best thing is that it’s authentic It appears homemade and it largely is It talks with an honest voice and it makes it clear that you are dealing ... over from an ad or brochure or recommendation And that person is looking for more information on camps that meet her family’s needs So offer that information And it with a vernacular and a tone ... hate your ad and don’t click on it If your ad is really bad, Google will send you a note and fire you Imagine that a media company firing an advertiser for running ineffective ads There’s an art...

Ngày tải lên: 27/05/2014, 12:52

... Sheets • Vascular Access for Hemodialysis • Hemodialysis Dose and Adequacy • Peritoneal Dialysis Dose and Adequacy • Amyloidosis and Kidney Disease • Anemia in Kidney Disease and Dialysis • Renal Osteodystrophy ... refuse treatment You may state that you want your health care team to use all available means to sustain your life Or you may direct that you be withdrawn from dialysis if you become permanently ... body to retain sodium, leading to high blood pressure Pros and Cons Kidney transplantation has advantages and disadvantages (See the boxed text.) 18 Kidney Transplantation Pros + A transplanted kidney...

Ngày tải lên: 01/09/2012, 11:09

... Heading towards the horizon the tears look for the dryness that gives the oblivion, which hollows again that emptiness that allows new abundances, another one but that frightens the ... the past calms her down Then they go, or at least they think so They head to the ocean and they leave The love agony was never a bearable landscape Never It hurts too much They go, they leave ... leaving is healthy, even with the rancor of dizziness In search of a nice awakening, painting that hair with silver color, still perfumed, dyeing that face with shadows, still loved The tears...

Ngày tải lên: 07/11/2012, 09:09

... entity classes, business rules, and middle-tier caching of data to reduce database roundtrips Data access layer Encapsulates database access and provides an interface that is database and data source ... Workflows Database Context Figure 2-2 Default.aspx calls DashboardFacade in the business layer for all operations, which, in turn, uses workflows that work with databases via DatabaseHelper and DatabaseContext ... a class that performs some unit task Activities use the DatabaseHelper and DashboardDataContext classes to work with the database DatabaseHelper is a class used for performing common database...

Ngày tải lên: 15/11/2012, 14:24

... connected to the database, you can view things such as the tables You can also retrieve and modify rows in the tables You can drill down to the tables in the database by clicking the Add icon in the ... selected the ContactName, CompanyName, and CustomerID columns from the Customers table Figure 3.29: Building a SQL statement visually You can view the properties of a column in a table by clicking ... Entering a SQL statement You can build SQL statements visually by clicking the Show Diagram button in the toolbar and selecting columns from the table, as shown in Figure 3.29 As you can see,...

Ngày tải lên: 20/08/2013, 15:08

... 10:47 AM Page 226 CHAPTER 10 ■ BUILDING A SAMPLE APPLICATION USING ASP.NET AJAX Figure 10-1 An ASP NET AJAX-based stock application Understanding the Application Architecture The application ... OnActiveTabChanged="TabContainer1_ActiveTabChanged"> Basic Quote

Ngày tải lên: 05/10/2013, 10:20

... company—for example, a labor strike in a plant that was not expected or anticipated that catches management unprepared A contingency plan should address such occurrences Natural disasters are a ... operational plan sets the strategic plan into motion on a practical level Building a Business Plan in Five Pages 31 The Organizational Plan—Defining Your Corporate Structure The organizational ... plan That s an easy question with a straightforward answer The top management team writes a company business plan The combined thought processes of your top managers and their agreement on what...

Ngày tải lên: 24/10/2013, 09:20

... or inclination, or a fixed state of mind So, a wealth and prosperity mindset would mean an attitude or inclination that causes us to focus on abundance It may surprise you to learn that most people ... overly-defensive can actually provoke attacks, and being overly-pessimistic can attract more and more issues that prevent us from improving our lives Rather than living with a reactive mindset, you can learn ... them, they’ll begin to fade away and eventually disappear You’ll have convinced yourself that they’re not true after all Taking the Right Actions Now that you’re starting to transform your perceptions...

Ngày tải lên: 24/10/2013, 16:15

... are directly connected The default Gateway is only required on local area networks that are connected to a router Computer IP Address Subnet mask Default Gateway PC – A 192.168.1.1 255.255.255.0 ... the two PCs a Set the IP address information for each PC according to the information in the table b Note that the default gateway IP address is not required, since these computers are directly ... they can be restored at the end of the lab These include IP address, subnet mask, default gateway, and DNS servers If the workstation is a DHCP client, it is not necessary to record this information...

Ngày tải lên: 27/10/2013, 07:15

... are directly connected The default gateway is only required on local area networks that are connected to a router Computer IP Address Subnet mask Default Gateway PC – A 192.168.1.1 255.255.255.0 ... the two PCs a Set the IP address information for each PC according to the information in the table b Note that the default gateway IP address is not required, since these computers are directly ... they can be restored at the end of the lab These include IP address, subnet mask, default gateway, and DNS servers If the workstation is a DHCP client, it is not necessary to record this information...

Ngày tải lên: 27/10/2013, 07:15

... containing the image from the database Create a SQL statement to retrieve the required image from the database and retrieve the image using a DataReader A DataTable or DataSet filled using a DataAdapter ... image from the database and serves it to the Image control on the web page that the client sees The following steps outline the required tasks: Create a web page that outputs a binary stream ... but not straightforward Fortunately, it is much simpler with ASP.NET than it was in ASP Two web pages are required: one that contains the user interface that the client sees and one that retrieves...

Ngày tải lên: 28/10/2013, 18:15