A Note On Mondrian Architecture - 1075 Words

MONDRAIN Mondrain is a Relational Online Analytical Processing server. It is written in Java and used for reporting and data warehousing. It supports Mulidimensional expression query language i.e, MDX, OLAP4J for interface specification and XML for analysis. It is an open source OLAP server and more useful for analysis that involves drilling down data. The Mondrian schema is supported by almost any OLAP client tool. Connecting to Mondrian Engine Mondrian maintains data in MDX fashion. For us to access any existing cube, we need some reporting tool. We can use Pentaho Report designer for writing the query to fetch data from data warehouse and publish it on the report using MDX. One of the ways we can connect to Mondrian is by using its rich†¦show more content†¦Three kinds of data need to be stored: fact table data (the transactional records), aggregates, and dimensions. The multidimensional format does not perform well when there are more than few dimensions which will lead to sparse data. A HOLAP , a hybrid OLAP system solves this problem by only storing the aggregates in multidimensional format. Mondrian’s primary API is proprietary. Mondrian provides API for client applications to executing queries. It uses a language called MDX which is used for querying multidimentional databases. Mondrian is used for: 1. It gives high performace and provided interactive analysis of large or small data. 2. It provides dimensional exploration of data 3. We can parse MDX into SQL to retrieve answers to dimensional queries. 4. High speed queries 5. Advanced calculations using calculation expression of MDX language DRUID Druid is open source distributed data store written in java . It allows fast access to large sets of seldom changing data. It is commonly used in Business intelligence applications to analyze high volumes of real time and historical data. Druid allows for single table queries. It provides: †¢ Partially nested data structures use columnar storage format. †¢ For quick filtering, can use indexing. †¢ hierarchical query distribution with intermediate pruning †¢ realtime ingestion †¢ fault tolerant distributed architecture Architecture: The name druid comes from role playing games as it is capable ofShow MoreRelatedEssay The Golden Ratio995 Words   |  4 Pageseye. Perhaps the first to use the golden ratio were the Egyptians. Many (if not all) of the pyramids were made with the golden ratio kept solely in mind†¦ as if they were made only using the ratio. Later, the Greeks began using it in their architecture as well as their sculptures. Phidias and others popularized the golden ratio by basing their achievements on it. The Parthenon, specifically, as well as several other buildings and sculptures were the subject of which the ratio has left its markRead More The History of Art Essay4153 Words   |  17 Pagesintended to represent a naturalistic scheme. It is important to note that the symbolization is that of the human form and representative of some form of authoritarian hierarchy. Tracking the human form and its relationship to art, history, and culture as the human figure evolves through the centuries as artists perfect their talents is an effective way to establish how art has evolved throughout all culture and eras. The architecture form the ancient world throughout history also reflects the culturesRead MoreTexas Rangers13480 Words   |  54 Pagesa capacity crowd;his first lecture in Texas since his departure from Austin in the summer of 1957. I have arrived late, having driven the 350miles from San Antonio to the Dallas-Fort Worth area.Though there is a substantial contingent of young architecture students for whom the lecture is only one of a series,glancing around I reacquaint myself with the older faces;the balding,graying heads in the hall----Duane Landry and Jane Lorenz Landry,Bill Odum,Bill Booziotes,Rik Mcbride,and many,many others---allRead MoreEssay on What is Art?4193 Words   |  17 PagesIntro In late Antiquity the arts consisted of the seven artes liberales, the liberal arts: Grammar, Logic, Rhetoric, Geometry, Arithmetic, Astronomy, and Music. Philosophy was the mother of them all. On a lower level stood the technical arts like architecture, agriculture, painting, sculpture and other crafts. quot;Artquot; as we concieve of it today was a mere craft. Art in the Middle Ages was quot;the ape of naturequot;. And what is art today? Can we give a definition? Sir Roger Penrose, one