constraints primarykeys relationships based on multiple columns

... the two tables Constraints are only enforced if the EnforceConstraints property is true The Add( ) method of the ConstraintCollection of the DataTable, which is accessed using the Constraints property, ... the multicolumn unique constraint result.Append("Creating unique constraint on parent table." + Environment.NewLine); dtParent .Constraints. Add(new UniqueConstraint("UConstraint", new DataColumn[] ... DataColumn[] {dtChild .Columns[ "ParentKey1"], dtChild .Columns[ "ParentKey2"]}, true); resultTextBox.Text = result.ToString( ) + Environment.NewLine + "Done."; Discussion Unique and foreign-key constraints...

Ngày tải lên: 21/01/2014, 11:20

... can only been decided on the basis of a number of criteria, and a preference mechanism is not based on a dichotomy between correct and wrong results, but on a scale of degrees of acceptability One ... same structure Simple constraints may be combined with the operators 'and" and 'or' to form complex constraints Scores, which have the function of driving p-rule interaction, are positive integers ... Correspondences: The notion of correspondence between (sub)trees is central topreference rules of the binary type A number of def'mitions of this concept can be envisaged: i The correspondence...

Ngày tải lên: 01/04/2014, 00:20

... the that evolutionary interpretation question is how such differentiation arose It seems reasonable to assu- isozymes is correlated with time of separation among isolated populations The validity ... classification ; 2) the oceanian forms of O rufipogon and O longistaminata were excluded ; 3) only the Asian forms of O rufipogon (including those of Chinese origins) were considered, (a) alone and ... parental relationships between its various forms or species and how such differentiation has arisen A The pattern of interrelationships among the Sativa group The Sativu group was defined on the...

Ngày tải lên: 09/08/2014, 22:23

... with the proposed scheme IV CONCLUSION In this paper, we have made a contribution to a multiple non-blind watermarking scheme based on the DWT The proposed scheme consists in applying the DWT ... two-dimensional DWT uantization approach Tao and Eskicioglu propose in [12] decomposition level a non-blind produces four representations of an image: an ap multiple watermarking scheme based on the ... Eskicioglu’s compression, filtering, geometrical deform method and ations and Yuan’s method [13] These two methods are ba noise addition sed on the - The HH sub-bands are robust to nonlinear d multiple watermarking...

Ngày tải lên: 21/11/2013, 23:58

... MCQs subtopic wise Each chapter contains three sections Section contains easy level questions Section contains competitive level questions Section contains questions from various competitive exams ... Distribution 604 21 Binomial Distribution 619 Std XII: Triumph Maths TARGET Publications MATHEMATICAL LOGIC 01 Logical Connectives: Connective And (Conjuction) Or (Disjunction) If … then (Conditional) ... (D) None of these The proposition p → ~(p ∧ ~q) is (A) contradiction (B) a tautology (C) contingency (D) none of these 18 TARGET Publications 19 The statement (p ∧ q) → p is (A) a contradiction...

Ngày tải lên: 31/03/2014, 12:20

... prediction Motion compensation Motion estimation Integer transform and quantization Dequantization and inverse integer transform Pixel domain composition Rate-distortion optimized mode decision Multiplexer ... Transactions on Consumer Electronics, vol 45, no 3, pp 698– 705, 1999 [14] M Schu, G Scheffler, C Tuschen, and A Stolze, “System on silicon-IC for motion compensated scan rate conversion, picture-in-picture ... can be done with motion reestimation, mode decision, and entropy coding It takes significant complexity to perform exhaustive motion reestimation and RDO mode decision for every MB with wrong prediction...

Ngày tải lên: 22/06/2014, 19:20

... obtain the reconstruction of the original sequence We term the reconstruction from one description, for example, Description 1, as side reconstruction (reconstruction from Description is symmetrical) ... which is controlled by the shaper quantization step Qs A larger quantization step corresponds to lower level of redundancy and lower quality of side reconstruction (reconstruction from only one description) ... descriptions), and by D1 and D2 the side distortions (distortions when reconstructing from only one description) In case of balanced descriptions, D1 = D2 Denote as Ds the distortion of the...

Ngày tải lên: 22/06/2014, 22:20

... solution to this problem The key component in these systems is given by embedded multiple- description scalar quantization (EMDSQ) [7–11] EMDSQ belongs to the broad family of multipledescription ... rate-distortion performances of the proposed still-image codecs in data transmission over error-prone networks Finally, Section summarizes the conclusions of our work 2.1 EMBEDDED MULTIPLE- DESCRIPTION ... the QT information among the different descriptions, then there is no way to enable QT data recovery from a received description From the above discussion, the following conclusions can be drawn...

Ngày tải lên: 22/06/2014, 22:20

... stationary noise (e.g., air conditioner on) , but has some problems in the nonstationary noise (e.g., CD player on) CONCLUSIONS In this paper, we have proposed a nonlinear multiple- regression -based ... outlined in Section In Section 5, we present the environmental adaptation and model compensation algorithms Then the performance evaluation on the adaptive regression -based speech recognition framework ... regression weights obtained in the test environments is similar to training data contaminations [1], but the proposed one incorporates the information of test environments implicitly Regression-based...

Ngày tải lên: 22/06/2014, 23:20

... population structure [5], population differentiation and reconstruction of phylogenetic relationships among populations [4,16,32] The present study was undertaken to characterize the general relationships ... standard error 732 M.H Li et al Genetic relationships among goats 733 2.2 DNA extraction and PCR amplification Blood collection and DNA extraction were conducted in accordance with Li et al [14] ... interpreting the population relationships [20] The mean FST value (0.105) demonstrates that only about 10.5% of the total genetic variation attributes to the differentiation between populations and 89.5%...

Ngày tải lên: 14/08/2014, 13:21

... is stored on only one (or few) of the nodes and discovered based on users queries 2.3.1 Solution Data indexing proposed as a distribution inform ation discovery solution I t also based on Structured ... atrix 31 of other nodes to distribute content names based on LBM The following would deư scribe structure, construction condition, construction progression and management mechanism of LBM, 2.2.4.1 ... Information distribution based on Attribute-Value trees This section presents an IN S /T w ine solution for M u ltip le -a ttrib u te inform ation searching on D H T -based P P network The solution...

Ngày tải lên: 25/03/2015, 09:39

... of borrowing constraints and institutional policies on urbanization and economic development as well CHAPTER INTRODUCTION 11 Our research questions are motivated by facts mentioned above There ... 94.84 Composition of hukou and non-hukou Non-hukou migration migrant Composition of nonagricultural and Non-hukou agricultural hukou migrant Source: the 1% sample survey of the 4th national census: ... treated accumulation equation as a production function for innovations and specialized inputs to justify why cities favor innovation In this case, further innovations were proportional to the quantity...

Ngày tải lên: 16/09/2015, 12:15

... derivative was converted with thionyl chloride under standard conditions to the corresponding acidic chloride To a suspension of this acid chloride (2 mmol) in 20 ml CH2Cl2, a solution of 3-amino ... Hank’s solution containing 2% DMSO as a control After 25 minutes, the solutions were removed from the cells, then cells were washed twice with Hank’s solution and kept in Hank’s solution containing ... Ligation reaction based on the Diels Alder Reaction with invers electron demand [EP 06 012 414.6] 6-10-2006 46 Reppe W, Schlichting O, Klager K, et al Cyclisierende Polymerisation von Acetylen I...

Ngày tải lên: 26/10/2012, 09:07

... in the description of emotion in English poetry In the next session we will clear the concept of emotion ,metaphor emotion, and emotion in poetry III EMOTION AND POETRY Introduction No aspect of ... ideational meaning refers to the way one uses representational tools to compose the idea In the context stratum for example, functional components are concerned with field (what is going on in ... ideational systems of THING TYPE, CLASSIFICATION, EPITHESIS and QUALIFICATION, interpersonal systems of PERSON and ATTITUDE, and textual systems of DETERMINATION But the way the metafunctional contributions...

Ngày tải lên: 07/11/2012, 14:44

... Robinson, R.G 1997 Consolidation Analysis by Inflection Sridharan, A and Prakash, K 1995 Discussion on Point Method Geotechnique, 47 (1): 199-200 ‘Limitations of Conventional Analysis of Consolidation ... 75-79 of One-dimensional Consolidation Tests, Soils and Sivaram, B and Swamee, P.K 1977 A Computational Foundations, Japan, (17) 4: 59-69 Method for Consolidation Coefficient, Soils and Olson, R.E ... Karak - Jordan, 1-13 of 556 the Deformation Rate- Deformation (DRD) Method of the 1995 Discussion on ‘Limitations of Conventional Analysis of Consolidation Settlement’ ASCE Journal of Geotechnical...

Ngày tải lên: 21/03/2013, 14:09

... stages: destruction–coagulation, coagulation–condensation, condensation crystallization Afterthat, Glukhovsky theories were extended by different authors In this theories [3], dissolution of the solid ... dissolution of solid particles at the surface results in the liberation of aluminate and silicate most likely in monomeric form into solution This is the mechanism responsible for conversion of ... absorption Water absorption of unfired brick decreases respectively as content of fly ash is increased Figure shows the relationship between fly ash content and water absorption with content of...

Ngày tải lên: 01/04/2013, 22:46

... [mg m -3 ] One example that shows the Water effectiveness of such lake model for the D:non-predatory Death P:Predation E&D Pikeperch E:Excretion R:Resuspens ion prediction of the long-term effect ... El:Elution S:Sedimentation M:Mineralization U:Uptake biomanipulation is the application for the P Keszthely Basin, Lake Balaton (Hungary) ZooAlgae Bream Figures and shows the model structure plankton ... founded on June 9, 1997, in Ponds #3 and #4 The species of macrophytes were Hydrocaryaceae in Pond #3 and Hydrocaryaceae and Lemnaceae in Pond #4 During the pre-observation period, these ponds were...

Ngày tải lên: 05/09/2013, 08:40

... the First and Second Optimization CONCLUSION The purpose of optimal operation for water distribution system is to reduce the energy consumption as much as possible in condition of the flow and ... 12 online pressure monitoring points in the network, of which the topology is shown in Figure The condition of pumps in each pump station is expressed in Table The predictive hourly consumption ... kth monitoring point The Second Optimization Model of Mixed-pump Stations The best outlet flow and pressure of each pump station are obtained after the first optimization, and will be considered...

Ngày tải lên: 05/09/2013, 09:38