manually managing undo data

Ngày tải lên: 29/03/2014, 16:20

Ngày tải lên: 17/02/2014, 14:20

... Situation Ethernet-based data services offer the opportunity to create differentiation, command premium pricing, and earn higher margin for such value-added data services as transparent LANs, ... architecture. As service providers move from being vendors of T1, T3 and OC-XX data pipes to partners providing value-added Ethernet data services, an effective business model includes the following goals: • ... distribution system. Ethernet Distribution Frame Centralized Cross-Connect System for Managing Ethernet Data Services application note Figure 1 Active Network Element Bays Ethernet Distribution...

Ngày tải lên: 09/12/2013, 16:15

... value-added data services requires innovative offerings, a competitive price, and superior reliability and availability. Extending native Ethernet across the LAN, WAN, and MAN opens the door for new data ... new technologies implemented, the EDF remains constant, providing the common craft interface for managing Ethernet distribution without service disruption. Implementation Creating a craft-friendly,...

Ngày tải lên: 10/12/2013, 03:15

... Frame Situation Ethernet-based data services offer the opportunity to create differentiation, command premium pricing, and earn higher margin for such value-added data services as transparent LANs, ... architecture. As service providers move from being vendors of T1, T3 and OC-XX data pipes to partners providing value-added Ethernet data services, an effective business model includes the following goals: • ... distribution system. Ethernet Distribution Frame Centralized Cross-Connect System for Managing Ethernet Data Services application note Figure 1 Active Network Element Bays Ethernet Distribution...

Ngày tải lên: 22/12/2013, 12:15

... Cable Manager Figure 2 Situation Ethernet-based data services offer the opportunity to create differentiation, command premium pricing, and earn higher margin for such value-added data services as transparent LANs, ... architecture. As service providers move from being vendors of T1, T3 and OC-XX data pipes to partners providing value-added Ethernet data services, an effective business model includes the following goals: • ... distribution system. Ethernet Distribution Frame Centralized Cross-Connect System for Managing Ethernet Data Services application note Figure 1 Active Network Element Bays Ethernet Distribution...

Ngày tải lên: 16/01/2014, 21:20

... mode. Data Entry Form 33 CHAPTER 2 DATA ENTRY FORM This chapter teaches the following topics: — AN EASIER WAY TO TYPE IN DATA PLUS A MULTI-SERIES “FIND (DATA /FORM) — FORM BASED DATA ... Mode 30 CHAPTER 2 DATA ENTRY FORM 33 2.1 An Easier Way To Type In Data Plus A Multi-Series “Find” Utility (Data /Form) 33 2.2 Form Based Data Entry 33 2.2.a New data 34 2.3 Using ... The Two Roles Of Data/ Form 38 CHAPTER 3 REDUCING ERRORS IN DATA ENTRY— VALIDATION AND AUTOCORRECT 40 3.1 Validating Data During Data- Entry 40 3.1.a Validation for numeric data 42 3.1.b...

Ngày tải lên: 09/12/2013, 15:15

... the data is moved back to its points of origin, overlaying the original locked copies of that data. In today’s world of IT data management, a great deal of the Operations budget is consumed in managing ... multiple physical datasets across which production data is spread. In one 4 “Dataset” is a term with a long history, and not as much in use as it once was. It refers to a named collection of data that ... an enterprise solution to the problem of managing temporal data, thus supporting both the semantic and physical interoperability of temporal data across all the databases in the enterprise. Asserted...

Ngày tải lên: 24/12/2013, 02:16

... SQL 14 Data Warehouses and Data Marts Come of Age 14 The Inmon/Kimball Religious Wars 16 The 2000s 18 Data Cubes 18 Slowly Changing Dimensions 19 Real-Time Data Warehouses 20 The Future of Databases: ... introduced temporal data management at the database level (as opposed to the table, row or column levels), since data warehouses are entire databases devoted to historical data. History Tables On ... management of temporal data. They were: i. On-line analytical processing (OLAP) data cubes; ii. Slowly changing dimensions (SCDs); and iii. Real-time data warehousing. Data cubes are a software...

Ngày tải lên: 24/12/2013, 02:16

... temporal data that require manipulation of the data before it can be queried. Queryable data is the opposite. Temporal Data Management Queryable Temporal DataReconstructable Temporal Data Event ... Versioning. A Taxonomy of Methods for Managing Temporal Data In terms of granularity, temporal data can be managed at the level of databases, or tables within databases, or rows within tables, or ... Taxonomy of Methods for Managing Temporal Data 34 The Root Node of the Taxonomy 35 Queryable Temporal Data: Events and States 37 State Temporal Data: Uni-Temporal and Bi-Temporal Data 41 Glossary References...

Ngày tải lên: 24/12/2013, 02:16

... VERSIONING which contains data destined for production tables are inflow pipeline datasets. Pipeline datasets which contain data derived from production tables are outflow pipeline datasets. History ... pipeline datasets. We define a pipeline dataset as any collection of busi- ness data that is not a production table, but that contains data whose destination or origin is such a table. 1 Pipeline datasets 1 The ... balances. State Temporal Data: Uni-Temporal and Bi-Temporal Data At this point in our discussion, we are concerned with state data rather than with event data, and with state data that is queryable...

Ngày tải lên: 24/12/2013, 02:16

... tick granularity PERIOD datatype point in time time period episode managed object object pipeline dataset inflow pipeline dataset internalization of pipeline datasets outflow pipeline dataset replace supercede withdraw statement Chapter ... reference. The PERIOD Datatype A second issue related to changes in the SQL standard is the need for a PERIOD datatype. This new datatype will not change the semantics of temporal data management, ... overwrite data. Historical data can usually be found somewhere, of course, in archives and transaction logs if nowhere else. But if it is impor- tant to be able to quickly and easily access data about...

Ngày tải lên: 24/12/2013, 02:16

... 116 Glossary References 117 Managed objects are data which transformations and con- strai nts treat as a single unit. In the relational model, individual rows of data are the managed objects to which integrity ... period of its existence. Each of these rows is a version of the object it represents. Managing Time in Relational Databases. Doi: 10.1016/B978-0-12-375041-9.00005-4 Copyright # 2010 Elsevier Inc. ... erroneous data on those versions. And this is a shortcoming common to all best practice forms of versioning. When temporal gaps between adjacent versions of the same object must be supported, data...

Ngày tải lên: 24/12/2013, 02:16

... database. Chapter 5 THE CORE CONCEPTS OF ASSERTED VERSIONING 113 of those nine categories, and that find all of that data in the same tables that, in today’s databases, contain only current data, ... for a domain to change over time. But such changes are not changes to data. They are changes to types of data, indeed to datatypes. Domain changes are one form of what computer scientists call ... ways in which database schemas evolve. Both the standard temporal model and Asserted Versioning are formalizations of temporal data management within a snapshot of the evolution of a data- base...

Ngày tải lên: 24/12/2013, 02:16

... series of chapters which will describe our method of temporal data management in great detail, we will sometimes Managing Time in Relational Databases. Doi: 10.1016/B978-0-12-375041-9.00007-8 Copyright # 2010 ... not the objects themselves. A row in a Policy table is not a policy; it is data which represents the policy in our database. Through the DBMS, for the most part mediated by application software, we ... reference even a single clock tick in current effective time. Our sample database, shown in Figures 6.3 and 6.4, does not contain data that will illustrate this view which presents a current assertion...

Ngày tải lên: 24/12/2013, 02:16

... reconstructable and queryable data, we situated Asserted Versioning as, first of all, a method of managing and providing access to queryable data. Next, Managing Time in Relational Databases. Doi: 10.1016/B978-0-12-375041-9.00025-X Copyright # 2010 ... topic of temporal data manage- ment. We presented a brief history of how temporal data has been managed over the last quarter-century, and we also devel- oped a taxonomy of temporal data management ... Assertions and Other Pipeline Datasets 261 13. Re-Presenting Internalized Pipeline Datasets 289 14. Allen Relationship and Other Queries 311 15. Optimizing Asserted Versioning Databases 349 16. Conclusion...

Ngày tải lên: 21/01/2014, 08:20

... done manually. We describe this process in the following section. Generating an Asserted Versioning Database from a Physical Data Model and Metadata An Asserted Versioning database consists of data ... ASSERTED VERSIONING DATABASES Temporalizing the Physical Data Model ERwin generates a physical data model from the logical data model shown in Figure 8.2. At that point, the physical data model is ... works. Translating a Non-Temporal Logical Data Model into a Temporal Physical Data Model The Logical Data Model Figure 8.2 is the logical data model (LDM) of a sample data- base we have constructed, and...

Ngày tải lên: 21/01/2014, 08:20

Ngày tải lên: 21/01/2014, 08:20

Ngày tải lên: 21/01/2014, 08:20

Ngày tải lên: 21/01/2014, 08:20