{"id":707,"date":"2017-11-14T16:41:47","date_gmt":"2017-11-14T16:41:47","guid":{"rendered":"http:\/\/vargas-solar.com\/bigdata-management\/?page_id=707"},"modified":"2017-11-14T16:42:02","modified_gmt":"2017-11-14T16:42:02","slug":"exam-2","status":"publish","type":"page","link":"http:\/\/vargas-solar.com\/bigdata-management\/exam-2\/","title":{"rendered":"EXAM"},"content":{"rendered":"<ul>\n<li>Define the notion of Big Data. In your opinion how does this notion opens new challenges to data management?<\/li>\n<li>Give 5 features that characterise Big Data ? Explain in which way they are challenging for managing data?<\/li>\n<li>Explain the notion of sequential processing in data management. Do you feel that it is still valid for Big Data management?<\/li>\n<li>What are the data access patterns? How are they useful ?<\/li>\n<li>What does SLA mean and what is its role in data management?<\/li>\n<li>In the case of your domain of expertise, \u00a0how does Big Data opens novel possibilities or problems\/challenges?<\/li>\n<li>Compare the key-value, document, dimensional records and relational models. In which way are they different? What do we loose\/gain having such complex\/simple models? In which ways is the notion of key important in these models?<\/li>\n<li>Explain the notions of sharding and replication on how do they benefit Big Data management?<\/li>\n<li>In terms of multi-dabases, which are the challenges related to query rewriting in such setting? Give examples using the setting you illustrated in the previous question. Which are the challenges in the case of a sharding setting?<\/li>\n<li>What is a sharding key? Is the choice of a sharding key directly dependent of the sharding strategy? Explain and give examples.<\/li>\n<li>Which would be the aspects to consider if you wanted to provide a global solution for updating shards that are not orthogonal (i.e., there are replicated data and there are certain semantic dependencies between shards). What about synchronizing updates?<\/li>\n<li>Which would be the role and\/or benefit of the cloud with respect to Big Data management?<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Define the notion of Big Data. In your opinion how does this notion opens new challenges to data management? Give 5 features that characterise Big Data ? Explain in which way they are challenging for managing data? Explain the notion of sequential processing in data management. Do you feel that it is still valid for [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"parent":0,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"page-templates\/full-width.php","meta":{"footnotes":""},"class_list":["post-707","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/vargas-solar.com\/bigdata-management\/wp-json\/wp\/v2\/pages\/707","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/vargas-solar.com\/bigdata-management\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/vargas-solar.com\/bigdata-management\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/vargas-solar.com\/bigdata-management\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/vargas-solar.com\/bigdata-management\/wp-json\/wp\/v2\/comments?post=707"}],"version-history":[{"count":1,"href":"http:\/\/vargas-solar.com\/bigdata-management\/wp-json\/wp\/v2\/pages\/707\/revisions"}],"predecessor-version":[{"id":708,"href":"http:\/\/vargas-solar.com\/bigdata-management\/wp-json\/wp\/v2\/pages\/707\/revisions\/708"}],"wp:attachment":[{"href":"http:\/\/vargas-solar.com\/bigdata-management\/wp-json\/wp\/v2\/media?parent=707"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}