# SCM-IoT: An Approach for Internet of Things Services Integration and Coordination
## 6 Conclusions  
SCM-IoT is a model for developing applications in the context of IoT that has a logically centralized data-oriented architecture, which allows addressing artificial intelligence and automated learning applications. These applications involve the collaboration of intelligent agents that share a storage medium to exchange information and build solutions. Among the advantages that the SCM-IoT model provides are the following:  
* The simplicity and flexibility of the mechanism for integrating new participants;
* The decoupling between the activities of the participants, which gives them a high degree of independence and autonomy;* The distinction between two types of clients according to the storage and publishing services offered by the editor acting as a broker;
* The flexibility of the proposed producer-editor-subscriber interaction pattern allows distinguishing clients' roles according to the services provided by the publisher and integrating them as interoperable components. Although the SCM-IoT model is similar to the active database model, there are substantial differences that are described below in the form of advantages:  
* The tables used in IoT applications are small, so the size, complexity, and cost of their administration that they demand is inconvenient;
* DBs also suffer from a lack of dynamism to accept queries dynamically formulated by subscribers and incorporate new processing rules;
* The technology used is built on the W3C XML standard;
* Available tools such as XPath and XSLT provide enormous flexibility for modeling complex data that is difficult to define in the standard relational database model;
* For the representation of knowledge and automated reasoning, XML technology provides a more suitable way to develop artificial intelligence applications based on RuleML [88]. Finally, future work intends to increase the expressiveness of the service composition mechanism in the IoT to include conditions and actions in service requests. For this purpose, the XML databases for the notebooks' administration will be investigated to determine if the computational infrastructure they require conforms to the profile that IoT applications typically demand. Likewise, due to the capacity of integration and application to the environment of the SCM-IoT model, it is considered to extrapolate it to other application domains such as industrial and transportation and logistics, since in these domains there are also composition problems of services although with other particular characteristics that have to be considered. Finally, it is intended to incorporate new intelligent devices that have the new technical characteristics that are increasing according to the new challenges and challenges to be addressed in the development of solutions in the context of the IoT. Conceptualization, I.M.-C., J.O.O.-A. and G.A.-H.; Data curation, J.O.O.-A. ; Formal analysis, L.R.-M. and A.L.-C.; Funding acquisition, G.A.-H., L.R.-M. and J.L.S.-C.; Investigation, J.L.S.-C.; Methodology, I.M.-C. and J.O.O.-A. ; Project administration, G.A.-H.; Resources, G.A.-H.; Software, I.M.-C., J.O.O.-A. and L.R.-M.; Supervision, L.R.-M. and A.L.-C.; Validation, I.M.-C., G.A.-H. and L.R.-M.; Visualization, J.L.S.-C. and A.L.-C.; Writing--original draft, I.M.-C. and J.O.O.-A. ; Writing--review and editing, J.O.O.-A. and G.A.-H. All authors have read and agreed to the published version of the manuscript. This research was funded by Mexico's National Council of Science and Technology (CONACYT) and the Public Secretariat of Education (SEP) through the Sectorial Fund of Research for Education, grant number A1-S-51808 and the project 52-2016: \"Application of Big Data and Semantic Web techniques to Develop Intelligent Systems\", a postdoctoral grant, and a doctoral grant. Not applicable. Informed Consent Statement: Informed consent was obtained from all subjects involved in the study. Data Availability Statement: The data presented in this study are available on request from the corresponding author.