• Journal of Korean Institute of Industrial Engineers
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• v.37 no.3
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• pp.264-270
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• 2011

A new method for creating a logical data model is proposed. The logical data model developed by the method defines table, primary key, foreign key, and fields. The framework of the logical data model is constructed by modeling the relationships between events and their related entity types. The proposed method consists of a series of objective and quantitative decisions such as maximum cardinality of relationships and functional dependency between the primary key and attributes. Even beginners to database design can use the methology as long as they understand such basic concepts about relational databases as primary key, foreign key, relationship cardinality, parent-child relationship, and functional dependency. The simple and systematic approach minimizes decision errors made by a database designer. In practial database design the method creates a logical data model in Boyce-Codd normal form unless the user of the method makes a critical decision error, which is very unlikely.

• Journal of the Korea Fashion and Costume Design Association
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• v.20 no.2
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• pp.63-71
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• 2018

The purpose of this study is to establish a relationship between TV home shopping model and the marketing data of the TV home shopping industry. Differences in relationship marketing factors, trust, and intent to reuse depending on the experience of the model have resulted in a higher assessment of both the expertise and service factors of fashion stylists than groups with 10 years or less experience. In addition, model groups with 15 or more broadcasts in one month rated the professionalism, communication, ties, trust, and intent to reuse fashion stabilists more than 15 model groups. The difference in marketing factors, services, communications and ties between the professional and use of home shopping models was found to be 40 years old as compared to those in their 20s and 30s. Finally, in terms of the gender of the home shopping model, the difference between the marketing factors and the reliability of the relationship and the intent to reuse, the professional, communication and bonding, trust, and re-purpose factors were all rated higher by the female group than the male group. The results of the study suggest that a relationship marketing strategy needs to be established between a fashion stylist and a TV home shopping model, and fashion stylists should be judged based on the characteristics of a TV home shopping model.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.6
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• pp.197-202
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• 2019

XML has been established as a de facto standard for representing and exchanging documents, and has been widely used as a logical data model. Using XML as a logical database model, it requires a conceptual model for the semantics that XML has. However, the existing conceptual models, such as Entity Relationship models and UML, have been extended their concepts to express the specific characteristics of XML, but so far, there are no standard models. This paper compares the characteristics of the typical model of conceptual model of XML by Extended Entity Relationship model from the perspective of database field. For this, we propose the requirements that must be met for XML, and on the basis of these requirements, the approaches of each model are compared.

• Journal of Korean Institute of Industrial Engineers
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• v.29 no.1
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• pp.14-20
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• 2003

The purpose of this paper is an attempt to analyze the dynamic relationship between KSE and KOSDAQ, two competing markets in Korean stock market, in the viewpoint of competition. Lotka-Volterra model, one of well-known competitive diffusion model, is adopted to represent the competitive situations of Korean stock market and it is estimated using daily empirical index data of KSE and KOSDAQ during 1997~2001. The results show that there existed a predator-prey relationship between two markets in which KSE acted as a predator right after the emergence of KOSDAQ. This interaction was altered to a symbiotic relationship and finally to the pure competition relationship. We also perform an equilibrium analysis of the estimated Lotka-Volterra equations and, as a result, it is found that there is a market index equilibrium point that would be stable in the latest relationship.

• Korea Trade Review
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• v.44 no.6
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• pp.169-185
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• 2019

The purpose of this study is to analyze the structural relationships of perceived value, price sensitivity, and satisfaction between brand image and purchase intention of consumers who have experience of overseas direct purchase. This study collected questionnaires used to analyze these structural relationships. Using the R's plspm package, we analyzed the PLS (partial least squares) structural equation model. In order to examine the relationship between perceived value and price sensitivity, the research model was modified and analyzed. As a result, not only the adoption of the research hypothesis, but also the goodness of fit was higher than before the research model modifying, and the relationship between perceived value and price sensitivity was further verified. The modified research model has higher academic value, so it is necessary to select it as the final proposal model.

• The Research Journal of the Costume Culture
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• v.16 no.6
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• pp.1126-1141
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• 2008

The purposes of this study identify how attributes of the website impact on consumer attitude toward the website. For this purpose, the study tested covariance structural model which set relationships among independent variables (interactivity and shopping value), meditated variables(relationship commitment), and dependent variables(attitude toward website). The data were collected from a sample of 239 internet shopper of college female students. The covariance structural model and research hypothesis analyzed by using SPSS 16.0 and AMOS 5.0 program. The results are as follows: First, the structural model is accepted significantly. Second, interactivity and shopping value of website have a positive influence on relationship commitment. Third, interactivity, shopping value of website, and relationship commitment have a positive impact on attitude toward the website. Forth, even if shopping value has not a positive influence on attitude toward the website, it was found to have a significant effect on attitude toward the website through the relationship commitment.

• Journal of the Korean Society of Clothing and Textiles
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• v.33 no.9
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• pp.1472-1482
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• 2009

This study identifies how website attributes impact consumer loyalty to websites. For this purpose, the study tested covariance of a structural model which set relationships among independent variables (trust and site stickiness), meditated variables (relationship commitment), and dependent variables (website loyalty). The data were collected from a sample of 239 female college internet student shoppers. The covariance structural model and research hypothesis are analyzed using SPSS 16.0 and AMOS 5.0 program. The results are as follows: First, the structural model is significantly accepted. Second, trust and stickiness have a positive influence on the relationship commitment. Third, trust, stickiness, and relationship commitment have a positive impact on website loyalty. Forth, even if stickiness has no positive influence on website loyalty, it has a significant effect on website loyalty through the relationship commitment.

• The Transactions of the Korea Information Processing Society
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• v.4 no.7
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• pp.1665-1680
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• 1997

The Entity-Relationship (E-R) model is widely used not only to increase understanding between user and designer, but also to model the relationship of real world data appropriately when designing database system in many application areas. It should be then transformed into an Object-Oriented database model which gives good merits to represent and manipulate data efficiently. Therefore, a method of transforming an E-R model into an Object-Oriented database model should be studied, but without losing any semantics of concept for the E-R model. This paper not only deals with transformation rules taking as input the elements of E-R model and delivering the elements of an Object-Oriented database model, but also improves the concept of generalization and aggregation inheritance. The paper also presents a method of transformation of relationship depending on these rules. The proposed method that obtains Object-Oriented database schema from an E-R model with preserving the properties of the E-R model is shown with examples. The method presented is able to be used to the logical database design.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.8
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• pp.3458-3465
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• 2011

Business relationships can be divided into vertical and horizontal relationships. Relationship between horizontal competitors in the business of business to be done is generally vertical relationship between the main office Suppliers and Contractors says business done. In general, the number of models of business relationships through a lot of things are known. Model consisting of a vertical relationship, but there are not many highlights. In this paper, the vertical relationship problems based on the business model to develop. Vertical relationships include leading industrial electronics, automotive and many industrial tempted to target the automotive industry, but in this paper developed a model to look at. In Chapter 2 the theoretical background needed to develop a process model to examine the vertical relationship between Chapter 3 Features Find out about your business. Followed by Chapter 4 of this paper, the vertical relationship between the core business process model is developed. Finally, Chapter 5 of the study limitations and future research directions are suggested.

• Informatization Policy
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• v.24 no.1
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• pp.100-112
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• 2017

This study verified the relationship between internet use, family relationship, and cyber violence victimization by comparing models. 2013 The survey of Internet addiction of National Information Society Agency was used in this study to verify relationship between variables. We compared the model which internet use impact cyber violence victimization through mediating fully family relationship and other model which internet use influence cyber violence victimization through mediating partially family relationship. Based on final model (model 1), More internet use was related to lower family bond and lower family bond was associated with more cyber violence victimization. This results imply that family relationship have an important role in relationship between internet use and cyber violence victimization rather than internet use impact directly cyber violence victimization.