understanding the linux kernel third edition ebook

... considers theminimum rate of return for taking the risk of the capital investment If thesum of the present values of the stream of cash exceeds the cost of the pro-posed investment, then the rate ... average is then applied to the issues for the period Themethod has the advantage of eliminating some clerical work The dis-advantage is that the requisitions cannot be costed for the month untilthe ... of the new equipment • The salvage value of the old equipment • The economic life of the new equipment • The operating cost of the new item over its life • The reason for the expenditure For an

Ngày tải lên: 15/05/2017, 17:50

... guideline for the designer and the developer PREFACE FOR TH E SECON D EDITION xiii Trang 17When the first edition of Building the Data Warehouse was printed, the data-base theorists scoffed at the notion ... warehousing anddatabases and other technology There is the architecture, then there is theunderlying technology, and they are two very different things Unquestionably,there is a relationship between ... processing that serves theneeds of management in the decision-making process Often known as DSS pro- Preface for the Third Edition xvi Uttama Reddy Trang 20Preface for the Third Edition xviicessing,

Ngày tải lên: 08/08/2014, 21:23

... what bias there is to thedata, if any Programs are then written against the data The results of the pro-grams are analyzed, and finally the requirements of the system are understood.The CLDS is ... profile of the growth of the tables in the data warehouse ■■ A catalog of the indexes available for entry to the tables ■■ A catalog of the summary tables and the sources for the summary The need ... down into the next activity and trig-gers its start The development of the data warehouse operates under a very different lifecycle, sometimes called the CLDS (the reverse of the SDLC) The classicalSDLC

Ngày tải lên: 08/08/2014, 22:20

... gather information This taskincludes the following: ■■ Finding the data needed for the report ■■ Accessing the data ■■ Integrating the data ■■ Merging the data ■■ Building the report Finding the ... tables for the subject area product 5 - build the report 1 - find the data 2 - access the data 3 - integrate the data 4 - merge the data Trang 7Figure 2.27 Multiple reports make the cost of the data ... is whether auditing can be or should be done from them Auditing can be done from the data house In the past there have been a few examples of detailed audits being per-formed there But there

Ngày tải lên: 08/08/2014, 22:20

... activities occur randomly. The other type of snapshot trigger is time, which is a predictable trigger, such as the end of the day, the end of the week, or the end of the month. The snapshot triggered ... directly attached to the snapshot. The primary data is the nonkey data that relates directly to the key of the record. As an example, suppose the key identifies the sale of a product. The ele- ment ... and when the information about the event is captured. In other cases no distinction is made.) In the case of events triggered by the passage of time, the time element may be implied rather than

Ngày tải lên: 08/08/2014, 22:20

... be on the one-year and the five-year horizon Once the raw esti-mate is made, then the estimate tells the designer just how fine the granularityshould be In addition, the estimate tells whether ... all the levels of granularity a ori, then build the data warehouse Even in the best of circumstances, if 50 per-cent of the design is done correctly, the design is a good one The nature of thedata ... user makes a query there is no prior knowledge of where the dataresides The query is issued, and the system then finds the data regardless ofwhere it is While it is convenient for the end user to

Ngày tải lên: 08/08/2014, 22:20

... course, the local rations report to the same balance sheet as all other branches of the corpora-tion But, at the end of the day, the local organizations are effectively their owncompany, and there ... control trapping The amount of I/Orequired is usually nontrivial Furthermore, the I/O that is consumed is taken Trang 5out of the middle of the high-performance day, at the time when the system canleast ... theymature in their understanding and operation of the data warehouse First, theorganization reads legacy databases directly to refresh its data warehouse.Then it tries replication Finally, the

Ngày tải lên: 08/08/2014, 22:20

... The manager then looks at the regions that have tributed to the summary analysis The figures analyzed are those of the Westernregion, the Southeast region, the Northeast region, and the Central ... The idea was that the elegance of the screenpresentation would beguile the executive While there certainly is merit to theidea that the world of computation should be open to the executive, thefounders ... 7.3, the question can be asked, “Why is there such a difference in sales ofnew health policies for the past three quarters?” The EIS processing alerts themanager to these differences It is then the

Ngày tải lên: 08/08/2014, 22:20

... be made, then they can be made there with no impact on the data warehouse if the data has not already been moved to thewarehouse environment The Feedback Loop At the heart of success in the long-term ... the data warehouse is designed, the next step is to design and build theinterfaces between the system of record-in the operational environment-andthe data warehouses The interfaces populate the ... sys-tem of record The system of record then becomes the definition of the sourcedata for the data warehouse environment Once this is defined, the designer thenasks what are the technological

Ngày tải lên: 08/08/2014, 22:20

... relevant to the design review process As a rule, the more controversial the subject, the more important that it beaddressed during the review The questions that form the basis of the review process ... facilitator and a recorder The facilitator isnever the manager or the developer of the project being reviewed If, by somechance, the facilitator is the project leader, the purpose of the review—frommany ... At the table level? Atthe row level? At the column level? ISSUE:The use of data in the warehouse needs to be monitored to mine the dormancy rate Monitoring must occur at the table level, the

Ngày tải lên: 08/08/2014, 22:20

... is, the data in the data warehouse The second difference is that require-ments are not known at the start of the development process The third differ-ence (which is really a byproduct of the ... is the identification of the major subjectareas and their relationship to each other The deliverable of the dis activity isthe fully attributed and normalized description of each subject area The ... pulled from the warehouse is the result of theextraction program The deliverable of the subsequent analysis step is furtheranalysis based on data already refined The deliverable of the final analysis

Ngày tải lên: 08/08/2014, 22:20

... Output 11 1 printf, fprintf, and sprintf scanf, fscanf, and sscanf Other Stream Functions 11 2 11 4 11 6 Try It Out—Another... strptime Temporary Files Try It Out—tmpnam and tmpfile User Information ... Out—Multiple Windows Optimizing Screen Refreshes Subwindows Try It Out—Subwindows The Keypad Try It Out—Using the Keypad Color 205 206 207 208 210 210 211 211 212 212 212 214 215 215 216 217 217 ... 14 : Semaphores, Shared Memory, and Message Queues Semaphores Semaphore Definition A Theoretical Example Linux Semaphore... Application Using KDE/Qt Try It Out—MainWindow Try It Out—AddCdDialog

Ngày tải lên: 09/08/2014, 14:21

... variables within shell functions by using the localkeyword The able is then only in scope within the function Otherwise, the function can access the other shell vari-ables that are essentially ... As the script executes, the function yes_or_nois defined but not yet executed In the ifstatement, thescript executes the function yes_or_no, passing the rest of the line as parameters to the ... to the script If we want to get the result into a variable, we can just assign it in the usual way: whoisthere=$(who)echo $whoisthere Note that with the older form of the command execution, the

Ngày tải lên: 09/08/2014, 14:21

... the sub_window_ptrto point to the result of the subwincall, we make the subwin-dow scrollable Even after the subwindow has been deleted and the base window (strdcr) is refreshed,the text on the ... the time ittakes depend on the particular hardware you’re using When the access is to memory that isn’t physi- cally resident, there is a page fault and control is passed to the kernel. The Linux ... Eventually, when the application exhausts both the physical memory and the swap space, or when themaximum stack size is exceeded, the kernel finally refuses the request for further memory and

Ngày tải lên: 09/08/2014, 14:21

... in the array The inner loop swaps the element with those further down the list This has the effect ele-of bubbling up the smaller elements to the top After each run ele-of the outer loop, the ... that might clash The term current in the above descriptions refers to the point at which the preprocessing is being performed, that is, the timeand date the compiler was run and the file processed ... the program gave the message segmentation fault, they can also reportexactly what the program was doing at the time, not just what the user was doing The difference can beimmense There is obviously

Ngày tải lên: 09/08/2014, 14:21

... arranges the scheduling of the two processes so that they both run when they can and are blocked when they can’t Thus, the writer is blocked when the pipe is full, and the reader is blocked when the ... demonstrate the behavior of popen We can count thelines in all the popenexample source files by cating the files and then piping the output to wc -l,which counts the number of lines On the command ... creates a pipe with the pipecall It then uses the forkcall to create a new process If the forkwas successful, the parent writes data into the pipe, while the child reads data from the pipe.Both parent

Ngày tải lên: 09/08/2014, 14:21

... server_socket= The device type is “socket,” shown by the sat the front of the permission and the =at the end The sockethas been created just as an ordinary file would be, with permissions modified by the ... root You can see the port numbers that have been assigned to the connection between the server and theclient The local address shows the server, and the foreign address is the remote client ... puts the call through to the correct department (the serverprocess) and from there to the right person (the server socket) Each incoming call (client) is routed to anappropriate end point and the

Ngày tải lên: 09/08/2014, 14:21

... member) We simply pass in the object that owns the signal (the sender), the signal function, the object that ownsthe slot (the receiver), and finally the name of the slot In our MyWindowexample, ... name=0 ) The first argument is the text of the button label, then the parent widget, and last the name of the buttonused internally by Qt The parent parameter is common to all Qwidgets, and the parent ... which adds the button to the ButtonWindowmain area The nameargument sets the name of the widget for use internally by Qt If Qt encounters an error, thenthe widget name will be printed in the error

Ngày tải lên: 09/08/2014, 14:21

... patching of the kernel for the x86 platform, however, as the features are not yet included there—although they might be in the future Some of the other platforms provide similar features without the ... between the kernel and what is written here, trust the kernel That is the beauty and the glory ofOpen Souce projects—that the source is always there, free for you to browse at will Some of the kerneldevelopers ... catch them Thesection on integrated debugging will explore further options Trang 35state-The Magic KeyThe most unfortunate bugs are the ones that crash the system completely In these situations, the

Ngày tải lên: 09/08/2014, 14:21

... Services Understanding the Integrated Audit 1st Edition True - False Questions If management has presented the actual economic events and situation according to the accounting standards, then there ... 1. True 2 False Trang 2The Audit Committee of the Board of Directors performs the audit and reports the results to shareholders and the Board of Directors 1. True 2 False The organization of a ... 1. True 2 False When there is a material misstatement in the financial statements, the auditor requires management of the company to correct the financial statements so the auditor can issue

Ngày tải lên: 24/03/2017, 15:41