wdm optical interfaces for future fiber radio systems phần 10 pps

Ngày tải lên: 04/07/2014, 03:55

... or future mechanism for dividing software into manageable portions. The scenario is software that consists of thousands or even hundreds of thousands of lines of code. The complexity of such systems ... for nearly all stages of soft- ware development, as follows. Architectural design This is the step during which the large-scale structure of software is determined. It is therefore cri...

Ngày tải lên: 03/07/2014, 01:20

... dependencies before the transitive dependencies, but historically, 3NF has been defined with the assumption that a relation is tested for 2NF first before it is tested for 3NF. Table 10. 1 informally summarizes the three normal forms ... multivalued dependencies, join dependencies, and fourth and fifth normal forms, which take these dependencies into account. Review Questions 10. 1. Dis...

Ngày tải lên: 07/07/2014, 06:20

... tools. 12.1 THE ROLE OF INFORMATION SYSTEMS IN ORGANIZATIONS 12.1.1 The Organizational Context for Using Database Systems Database systems have become a part of the information systems of many organizations. In the 1960s information ... organizations work with infor- mation systems and elaborated the various activities in the information system life cycle. Databases are an integra...

Ngày tải lên: 07/07/2014, 06:20

... whose hash values start with 010, and the second all those whose hash values start with OIl. Now the two directory locations for 010 and 011 point to the two new distinct buckets. Before the split, they pointed to the same ... for Files • Option 2 is to have variable-length records for the index entries, with a repeating field for the pointer. We keep a list of pointers <Pf i.l...

Ngày tải lên: 07/07/2014, 06:20

... restore the before image (old_value or BFIM) of data item X. This simple procedure always works correctly for strict schedules, but it may not work for recoverable or cascadeless schedules. For example, ... that are not serializable. For example, consider the following two transactions, each of which may be used to transfer an amount of money between two bank accounts: T i: rj(X); X:=...

Ngày tải lên: 07/07/2014, 06:20

... will be performed, causing a higher overhead. In addition, more storage space will be required for the lock table. For timestamps, storage is required for the read_TS and write_ TS for each data item, and there will ... write-ahead logging, we need to distinguish between two types of log entry information included for a write command: (1) the information needed for UNDO and (2) th...

Ngày tải lên: 07/07/2014, 06:20

Ngày tải lên: 12/07/2014, 17:20

... science, computer engineering, information systems, information technologies and project management. The Center for Language Research works in parallel with the Center for Cultural Research and Studies ... Cádiz (Spain) where she teaches courses on English for the shipping industry, for the shipping business and for shipping law, as well as English for marine engineers. Her...

Ngày tải lên: 22/07/2014, 04:21

... Therefore, in the description of the CVS as a mediated genre, the affordances of the medium and how they affect its generic integrity have to be taken into consideration. More importantly for ... few diversified industrial companies, and the rest were selected from Fortune 500’s list of the 100 best companies to work for in 2008. The reason behind the inclusion of very different typ...

Ngày tải lên: 22/07/2014, 04:21