Designing Distributed Data Warehouses and OLAP Systems
... The main idea of data warehouses implies a separation of input from operational databases and output to views that contain the data for particular OLAP tasks. In the data warehouse literature these views are often called “data marts”. The work in [LST99] presented a different view on data warehouse ...
... The main idea of data warehouses implies a separation of input from operational databases and output to views that contain the data for particular OLAP tasks. In the data warehouse literature these views are often called “data marts”. The work in [LST99] presented a different view on data warehouse ...
Introduction to Computer Science
... Information stored and processed by computer is a small fragment of reality containing essential data to solve stated problem. We have to think which informations are essential, which can help us and which are completely useless. We have to think how we will represent choosen informations. The last ...
... Information stored and processed by computer is a small fragment of reality containing essential data to solve stated problem. We have to think which informations are essential, which can help us and which are completely useless. We have to think how we will represent choosen informations. The last ...
CS 338 The Relational Data Model and Relational Database
... Each attribute value must be an atomic value from the domain Variety of data types associate with a domain ...
... Each attribute value must be an atomic value from the domain Variety of data types associate with a domain ...
Perspective Motion Segmentation via Collaborative Clustering
... of the camera projection, and its multi-frame extension does not suffer from the restriction of requiring features to be present in all frames. While projective factorization [17] extends the camera model to perspective, it needs an iterative process that alternates between the estimation of the de ...
... of the camera projection, and its multi-frame extension does not suffer from the restriction of requiring features to be present in all frames. While projective factorization [17] extends the camera model to perspective, it needs an iterative process that alternates between the estimation of the de ...
Linear Systems
... Since the application of a Gauss transformation to a matrix involves an outer product, we can regard LU factorization as a sequence of outer product updates Since zeros have already been introduced in columns 1 through k -1, the Gauss transformation update need only be applied to columns k throu ...
... Since the application of a Gauss transformation to a matrix involves an outer product, we can regard LU factorization as a sequence of outer product updates Since zeros have already been introduced in columns 1 through k -1, the Gauss transformation update need only be applied to columns k throu ...
OnLine Analytical Problem (OLAP)
... That’s why pre-aggregation is valuable because the dimensions of the cube can be hierarchal. For example time can be divided into half years, quarters, months and days. Predefining such hierarchal relations allows for smooth drilling down and pre-aggregation. ...
... That’s why pre-aggregation is valuable because the dimensions of the cube can be hierarchal. For example time can be divided into half years, quarters, months and days. Predefining such hierarchal relations allows for smooth drilling down and pre-aggregation. ...
Databases - McMaster University
... can be much larger than the available memory (retailer catalogue, bank accounts, personnel records); there is no need to explicitly open files and read data ¡ data can be accessed "simultaneously" by "clients" ¡ data is atomically updated: data is either stored or not, but never becomes corrup ...
... can be much larger than the available memory (retailer catalogue, bank accounts, personnel records); there is no need to explicitly open files and read data ¡ data can be accessed "simultaneously" by "clients" ¡ data is atomically updated: data is either stored or not, but never becomes corrup ...
Decision Support Systems
... Built to solve a specific problem and Focuses on reporting and identification of problems by scanning data extracted include their own databases from a data warehouses. ...
... Built to solve a specific problem and Focuses on reporting and identification of problems by scanning data extracted include their own databases from a data warehouses. ...
Hard ware Requirements
... important for object identification, which is essential to data cleaning and data integration. The other two algorithms are developed for discovering general CFDs. One algorithm, referred to as CTANE, is a level wise algorithm that extends TANE, a well-known algorithm for mining FDs. The other, refe ...
... important for object identification, which is essential to data cleaning and data integration. The other two algorithms are developed for discovering general CFDs. One algorithm, referred to as CTANE, is a level wise algorithm that extends TANE, a well-known algorithm for mining FDs. The other, refe ...
Design and implementation of Multi Dimensional Data
... with read only operation. OLAP tools are based on Multidimensional datamodel. The model views the data in the form of data cube. The data cube allows data to be modeled and viewed in multiple dimensions. It is defined by dimensions and facts. In general terms, dimensions are the perspectives or enti ...
... with read only operation. OLAP tools are based on Multidimensional datamodel. The model views the data in the form of data cube. The data cube allows data to be modeled and viewed in multiple dimensions. It is defined by dimensions and facts. In general terms, dimensions are the perspectives or enti ...
auth3in
... which are extremely diverse in nature (we name them “multiform data”), may be unstructured, structured, or even already organized in databases. Their availability in large quantities and their complexity render their structuring and exploitation difficult. Nonetheless, the concepts of data warehousi ...
... which are extremely diverse in nature (we name them “multiform data”), may be unstructured, structured, or even already organized in databases. Their availability in large quantities and their complexity render their structuring and exploitation difficult. Nonetheless, the concepts of data warehousi ...
Blame Trees - Edward Z. Yang
... out, and the result of the merge relies on the diffs between the base and source and between the base and target. These diffs are split into changed and unchanged segments, which are then used to build the new document. There are a few elaborations on the basic three-way merge. In the case of multip ...
... out, and the result of the merge relies on the diffs between the base and source and between the base and target. These diffs are split into changed and unchanged segments, which are then used to build the new document. There are a few elaborations on the basic three-way merge. In the case of multip ...
Scheduling Algorithms
... The sorted list of object storage servers is also used, same as in the MLML algorithm. For a given I/O request, two object storage servers will be randomly chosen from the top half of all object storage servers. The top half indicates M servers that have lighter loads. A threshold is used to d ...
... The sorted list of object storage servers is also used, same as in the MLML algorithm. For a given I/O request, two object storage servers will be randomly chosen from the top half of all object storage servers. The top half indicates M servers that have lighter loads. A threshold is used to d ...
ETL - GeekInterview.com
... stream. For example: looking up a value on record 1 at the same time as adding two fields on record 2. Component: The simultaneous running of multiple processes on different data streams in the same job, for example, sorting one input file while removing duplicates on another file. ...
... stream. For example: looking up a value on record 1 at the same time as adding two fields on record 2. Component: The simultaneous running of multiple processes on different data streams in the same job, for example, sorting one input file while removing duplicates on another file. ...
14. Lorel
... Overall site structure may change often. It would be nice to be able to query a web site. ...
... Overall site structure may change often. It would be nice to be able to query a web site. ...
