getting data into the data warehouse
the data warehouse toolkit, 3rd edition
Ngày tải lên :
24/04/2014, 16:10
... The Data Warehouse Toolkit The Data Warehouse Toolkit The Definitive Guide to Dimensional Modeling Third Edition Ralph Kimball Margy Ross The Data Warehouse Toolkit: The Defi nitive ... speaking, the operational systems are where you put the data in, and the DW/BI system is where you get the data out Users of an operational system turn the wheels of the organization They take ... history, but rather update data to reflect the most current state Users of a DW/BI system, on the other hand, watch the wheels of the organization turn to evaluate performance They count the new orders...
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Tài liệu Statistical Issues In Interactive Web-based Public Health Data Dissemination Systems doc
Ngày tải lên :
18/02/2014, 21:20
... They rejected the “rule of 5” for philosophical reasons They felt that if they were seen as suppressing data it would reduce the level of trust and hurt the department’s image The state and the ... Washington, there are three to four people in the department with their own programs, and they compare their results “all the time” to make sure that they get the same results as VistaPH They use ... Depending on the variability in the data for the target area and the desired degree of smoothing, more or less weight is put on the nearby area data Spatial models of this sort depend on the assumption...
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Báo cáo khoa học: "A FRIENDLY AND FLEXIBLE FRONT-END FOR DATA MANAGEMENT SYSTEMS" pptx
Ngày tải lên :
08/03/2014, 18:20
... meaning At the point where a unique node is determined, the mapping is made to a data item name via the CAN table This data item name is used in the generatlon of the query to the data management ... mapping function tables is made The copies are chanEed to delete the data items which the user is not to know about The names of the restricted tables are then stored in the user's profile record EUFID ... data items, and then express the query in a standard language (IL) A translator is written for each data management system in order to rephrase the IL query into the language of the data management...
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Báo cáo khoa học: "EVALUATION OF NATURAL LANGUAGE INTERFACES TO DATA BASE SYSTEMS" pdf
Ngày tải lên :
17/03/2014, 19:20
... e r i m e n t s done in the fall coufimed the results o f the earlier ones The Cask i n a l l t h r e e =odes was a r e a l one: l o a d i n g cargo o n t o a s h i p , the d a t a coming from ... the F-F and T-T e x p e r i m e n t s , ~n,~o persons were involved one given cargo item~ Co be loaded, the other infot~nation about decks (details in [8]) In the computational mode (H-C) the ... e n t s The c l o s e ness of the a v e r a g e of m e s s a g e s i n T-T and p a r s e d and uonparsed inputs in H C is striking Table (the meaning of abbreviations is given below the cable)...
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EXTENDING A DATA BASE SYSTEM WITH PROCEDURES
Ngày tải lên :
28/04/2014, 13:31
... true if the relation specified by the procedure in the left operand includes the relation specified by the procedure in the right operand The relation on the left is found by constructing the outer ... desirable to store their name and the query(s) which compose them in a main memory data structure Then, if the same or another user materializes an object with the same description, the one already ... INGRES and an INGRES+ data base must store records on each of the 50 hobbies in relations: SOFTBALL (emp-name, other data) SAILING (emp-name, other data) JOGGING (emp-name, other data) A normal...
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Báo cáo hóa học: "Research Article A Modified Run-Length Coding towards the Realization of a RRO-NRDPWT-Based ECG Data Compression System" pdf
Ngày tải lên :
21/06/2014, 05:20
... 2 control The RRO-NRDPWT-based ECG data compression also applies the SPIHT scheme for the coding of quantized wavelet coefficients The SPIHT scheme can be very efficient for data inherent in ... Section The proposed ECG data compression scheme is described in Section In Section 4, several experiments in ECG data compression are evaluated The analysis and synthesis report of the proposed ... evaluate the compression performance of the MRLC-based approach The original data compression scheme of [3] and the proposed scheme are referred to as NRDPWT-6r and NRDPWT-MRLC, respectively A dataset...
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NI-LabVIEW techniques and data acquisition system with NI-DAQ docx
Ngày tải lên :
27/06/2014, 10:20
... through code 32 Wires and Data Types • Transfer data between block diagram objects through wires • Wires are different colors, styles, and thicknesses, depending on their data types • A broken wire ... Hardware-in -the- loop “To for test and measurement what the spreadsheet did for financial analysis.” Industrial Control (PAC) Machine Control Electronic Devices Code Generation “To for embedded what the ... (PXIe), USB, Ethernet, serial, GPIB, and CAN devices • Modular data acquisition hardware from DC to 26.5 GHz • Motion control stages • Cameras • Hundreds of PLCs 25 LabVIEW Fundamentals 26 The LabVIEW...
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Postgres Data Base System Succinctly Guide by Peter Shaw
Ngày tải lên :
12/07/2014, 17:21
... a database system that for the most part has quietly remained in the shadows while other systems, such as those developed by Oracle, Microsoft and many others, have hogged the limelight The database ... Postgres database listed The PostGIS database is a default database used for spatial features Postgres is the master database (similar to system in MS SQL or MySql in MySQL), the central database ... host to the database used by that application, and kept all other databases on the server secure In practice, this means that if a web application’s security was ever breached, then the only database...
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Báo cáo khoa học: "A new data processing system for root growth and ramification analysis: description of methods" pot
Ngày tải lên :
09/08/2014, 02:21
... begins at the root origin on the hypocotyl (the oldest observation) The observer provides some information about the experiment, the dates and associated color codes HEa then introduces with the mouse ... to the previous segment specifying the sequential index of the segment on which it is inserted; a running index which is the number of the root to which the segment belongs; the root order; the ... index specifying the sequential index of the segment which follows on the same root and, finally, the rank of the branching point giving the position of the branch point on which the segment appeared...
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Báo cáo y học: "Comparison between data obtained through real-time data capture by SMS and a retrospective telephone interview" ppsx
Ngày tải lên :
13/08/2014, 14:20
... the analysis of cost we added the SMST-Q license and the cost of the SMS The estimate of the cost for the same volume of questionnaires as the number of SMS sent to the patients is based on the ... of the answers came from data obtained by the SMS-T- Q Each week for 53 weeks these questions were sent by SMS The patients were asked these questions only with respect to the last week, and they ... place or setting Requirements for data collection with SMS With the appropriate software, the researcher can access the SMS captured data via the Internet during the data collection phase This makes...
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A COMPRESSED DATA COLLECTION SYSTEMFOR USE IN WIRELESS SENSOR NETWORKS
Ngày tải lên :
24/08/2014, 12:25
... collection of their data Their deployment will typically follow the following pattern: Sample sensors at the nodes Gather sensor data at the sink Store and forward data at the gateway They will then download ... receiving data from the sink, doing any preliminary processing necessary, storing the data to a local database, and forwarding the data to the data management system or application via the Internet ... analysis, and backs the data up to a database In this framework, the data management systems database is the primary backup while the gateways database is a secondary backup in case the management...
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Principles of GIS chapter 3 data processing systems
Ngày tải lên :
21/10/2014, 10:09
... relations to define the database structure The computer programs either perform data extraction from the database without altering it, in which case we call them queries, or they change the database contents, ... supports the use of a data model A data model is a language with which one can define a database structure and manipulate the data stored in it The most prominent data model is the relational data ... carefully what the database purpose is, and who will be its users Then, one needs to identify the available data sources and define the format in which the data will be organized within the database...
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slike bài giảng hệ thống máy tính công nghiệp - bùi quốc anh chương 3 data acquisition systems
Ngày tải lên :
24/10/2014, 12:20
... sensors • The capacitance of a parallel plate capacitor is d is the separation between the plates, A is the area of the plates, ε0 is the permitivity of air and εr is the relative permitivity of the ... Other useful relationships are Ch3 - DAS 27 The Laplace Transform (review) • Applying the Laplace transform to the sensor model yields – G(s) is called the transfer function of the sensor • The ... sensor • A mercury thermometer immersed into a fluid – What type of input was applied to the sensor? – Parameters • C: thermal capacitance of the mercury • R: thermal resistance of the glass to heat...
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Emerging Security Issues In Modern Data Management Systems And Applications
Ngày tải lên :
13/08/2015, 10:01
... information Therefore, DMSs include database systems, data warehouses, and data mining systems Data could be structured data such as that found in relational databases, or semistructured data and ... granting access to the data on the basis of users’ clearance level and the sensitivity level of the data Users and data are considered as subjects and objects, individually, in the mandatory model ... is checked against the specified authorizations: if there exists an authorization stating that the user can access the object in the required mode, the access is granted, otherwise it is denied...
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Tribological studies of ultra thin films at head media interface for magnetic data storage systems
Ngày tải lên :
09/09/2015, 10:17
... which used the same write coil to read data In these heads, a voltage was induced to the coil when the read/write gap was passed by the magnetic transitions recorded on the medium The heads currently ... tape In other words, this means increasing the areal density of the tape Areal density is the raw number of data bits per square inch on the tape This requires the recorded bit size on the tape ... is the maximum in order to maintain the magnetic spacing Since the tape is always in contact with the head surface, adhesion of the coating to the head substrate is very critical; otherwise, the...
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A large scale microblogging data management system
Ngày tải lên :
09/09/2015, 11:16
... real-time data cube is maintained as the historical data, and the newly updated data are merged with the data cube on the fly during the processing of the real-time query Real-time search module The ... the performance The cached data are then flushed to disk once the size exceeds the upper bound The performance of these studies are limited by the size of the memory, and MaSM [21] overcomes these ... together, and these work include SAP Hana [47] and Hyper [66] In the main memory data warehouse, the OLAP queries are run on the up-to-date snapshot of the real-time data The tuples in the snapshot...
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Data fusion in managing crowdsourcing data analytics systems
Ngày tải lên :
10/09/2015, 09:09
... this thesis, we aim to present three techniques to solve the data fusion problem, namely the online data fusion method of the categorical data, the data fusion method of the continuous data and the ... data integration and data fusion is that data integration is used to combine the data and return the combination of the data to the user while data fusion actually is the data integration with ... multiple data sources based on the estimated features of the data source such as the drift and the random error • To apply the proposed data fusion methods in managing the crowdsourcing data analytics...
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Query processing in peer to peer based data management system
Ngày tải lên :
10/09/2015, 15:49
... facilitate the data sharing The central server defines the data model and provides an integrated interface for the participants The existence of central server simplifies the system design and makes the ... from the corresponding nodes and 2) how to compute approximate results, given the sample streams 1.3 Outline of The Thesis The rest of the thesis is organized as follows: • Chapter introduces the ... maintaining the index for processing queries The central server collects information from the other nodes and builds indexes for them Nodes can directly download data from others, but their queries...
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Data based system design and network analysis tools for chemical and biological processes
Ngày tải lên :
11/09/2015, 16:05
... significant for the next revolution into ‘molecular era’ [4] is the ability to use the computer to perform extensive modeling of these systems to simulate their behavior as well as to vast data search ... subsequently affecting the performance of data analysis techniques and inferences made therefrom The available data mining tools are either less effective or incapable of handling these issues A significant ... genomes) posses further challenges to understanding of the dynamics of complex networks by increasing the mathematical complexity of the problem [94] Challenges at the interaction level: The nature of...
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