Massively Parallel Databases and MapReduce Systems
... the systems in this category, including directed acyclic graphs in Dryad [197], serving trees in Dremel [153], and bulk synchronous parallel processing in Pregel [148]. Dataflow systems are covered in Chapter 5. Other System Categories: It became clear over time that new systems can be built by comb ...
... the systems in this category, including directed acyclic graphs in Dryad [197], serving trees in Dremel [153], and bulk synchronous parallel processing in Pregel [148]. Dataflow systems are covered in Chapter 5. Other System Categories: It became clear over time that new systems can be built by comb ...
Spis treści 1 Cursors
... cursor must be closed before it can be reopened. • DUP_VAL_ON_INDEX - A program attempts to store duplicate values in a column that is constrained by a unique index. • INVALID_CURSOR - A program attempts a cursor operation that is not allowed, such as closing an unopened cursor. • INVALID_NUMBER - n ...
... cursor must be closed before it can be reopened. • DUP_VAL_ON_INDEX - A program attempts to store duplicate values in a column that is constrained by a unique index. • INVALID_CURSOR - A program attempts a cursor operation that is not allowed, such as closing an unopened cursor. • INVALID_NUMBER - n ...
15. Concurrency Control
... A node Q can be locked by Ti in S or IS mode only if the parent of Q is currently locked by Ti in either IX or IS mode. A node Q can be locked by Ti in X, SIX, or IX mode only if the parent of Q is currently locked by Ti in either IX or SIX mode. Ti can lock a node only if it has not previously unlo ...
... A node Q can be locked by Ti in S or IS mode only if the parent of Q is currently locked by Ti in either IX or IS mode. A node Q can be locked by Ti in X, SIX, or IX mode only if the parent of Q is currently locked by Ti in either IX or SIX mode. Ti can lock a node only if it has not previously unlo ...
Perturbation Analysis of Database Queries
... Beyond Parallelization The simplest way to speed up perturbation analysis is to parallelize. The bulk of the workload is indeed embarrassingly parallel: each perturbation can be evaluated independently. However, this approach misses several opportunities mentioned in Section 1. We present several ex ...
... Beyond Parallelization The simplest way to speed up perturbation analysis is to parallelize. The bulk of the workload is indeed embarrassingly parallel: each perturbation can be evaluated independently. However, this approach misses several opportunities mentioned in Section 1. We present several ex ...
IOSR Journal of Computer Engineering (IOSR-JCE)
... pass, all single items are counted. From the frequent items, a set of candidate 2-sequences are formed, and another pass is made to identify their frequency, and this process is repeated until no more frequent sequences are found. MFS [2] algorithm first mines the database samples to obtain the roug ...
... pass, all single items are counted. From the frequent items, a set of candidate 2-sequences are formed, and another pass is made to identify their frequency, and this process is repeated until no more frequent sequences are found. MFS [2] algorithm first mines the database samples to obtain the roug ...
The Relational Model
... KROENKE and AUER - DATABASE CONCEPTS (6th Edition) Copyright © 2013 Pearson Educations, Inc. Publishing as Prentice Hall ...
... KROENKE and AUER - DATABASE CONCEPTS (6th Edition) Copyright © 2013 Pearson Educations, Inc. Publishing as Prentice Hall ...
the lhc logging
... according to their priorities. These priorities will be discussed with the community of users. Functionality may also be subject to changes driven by the acceptance of particular features by the users and by their requests. These features will be reflected in future releases of the document. This ar ...
... according to their priorities. These priorities will be discussed with the community of users. Functionality may also be subject to changes driven by the acceptance of particular features by the users and by their requests. These features will be reflected in future releases of the document. This ar ...
XML and Databases
... Mappings between document schemas and database schemas are performed on element types, attributes, and text. They almost always omit physical structure (such as entities, CDATA sections, and encoding information) and some logical structure (such as processing instructions, comments, and the order in ...
... Mappings between document schemas and database schemas are performed on element types, attributes, and text. They almost always omit physical structure (such as entities, CDATA sections, and encoding information) and some logical structure (such as processing instructions, comments, and the order in ...
Conceptual Data Models for Database Design
... Composite keys should be minimal, meaning that all attributes must be included to have the uniqueness property. Specifying that an attribute is a key of an entity type means that the uniqueness property must hold true for every entity set of the entity type. An entity can have more than one ke ...
... Composite keys should be minimal, meaning that all attributes must be included to have the uniqueness property. Specifying that an attribute is a key of an entity type means that the uniqueness property must hold true for every entity set of the entity type. An entity can have more than one ke ...
this FAQ
... MIP_Engine. To prevent confusion about which version of SQL Server you are using with MIP, it would help if you named the instance something other than MIP_Engine. However, changing the SQL instance name would require you uninstall and reinstall all MIP Fund Accounting Workstations on the network so ...
... MIP_Engine. To prevent confusion about which version of SQL Server you are using with MIP, it would help if you named the instance something other than MIP_Engine. However, changing the SQL instance name would require you uninstall and reinstall all MIP Fund Accounting Workstations on the network so ...
Making Your Network Safe for Databases
... when security procedures are implemented. Often, the focus is targeted towards securing the web server and little thought goes into how the database may be vulnerable because all of the ‘front-end’ security has been implemented. But databases usually contain a company’s most valuable information ass ...
... when security procedures are implemented. Often, the focus is targeted towards securing the web server and little thought goes into how the database may be vulnerable because all of the ‘front-end’ security has been implemented. But databases usually contain a company’s most valuable information ass ...
Chapter 4: SQL - Temple University
... average account balance is greater than $1200. select branch-name, avg-balance from (select branch-name, avg (balance) from account group by branch-name) as result (branch-name, avg-balance) where avg-balance > 1200 Note that we do not need to use the having clause, since we compute the temporary (v ...
... average account balance is greater than $1200. select branch-name, avg-balance from (select branch-name, avg (balance) from account group by branch-name) as result (branch-name, avg-balance) where avg-balance > 1200 Note that we do not need to use the having clause, since we compute the temporary (v ...
ATLAS Computing - Indico
... Target was migration of task request database and panda monitor First step was to prepare infrastructure ...
... Target was migration of task request database and panda monitor First step was to prepare infrastructure ...
EGEE NA4 Meeting - Catania, 09
... Consumer: represents a single SQL SELECT query on the virtual database. The query is matched against the list of available producers in the Registry. The consumer service then selects the best set of producers to contact and sends the query directly to each of them, to obtain the answer tuples. INFS ...
... Consumer: represents a single SQL SELECT query on the virtual database. The query is matched against the list of available producers in the Registry. The consumer service then selects the best set of producers to contact and sends the query directly to each of them, to obtain the answer tuples. INFS ...
Application Server Performance – A Technical White Paper
... keep the instance around, reusing it for all clients who want to use the same session bean class. The exact algorithm is container specific. In fact , stateless session beans can be pooled, reused and swapped from one client to another client on each method call. This saves time of object instantia ...
... keep the instance around, reusing it for all clients who want to use the same session bean class. The exact algorithm is container specific. In fact , stateless session beans can be pooled, reused and swapped from one client to another client on each method call. This saves time of object instantia ...
SQL Server 2000_ado_xsl
... The release of Microsoft SQL Server 2000 saw Microsoft jump on the XML band-wagon too: they've included a number of different ways to manipulate data as well-formed XML. Firstly, there's the SQL XML support. Microsoft's implementation of SQL XML provides a simple configuration tool that allows devel ...
... The release of Microsoft SQL Server 2000 saw Microsoft jump on the XML band-wagon too: they've included a number of different ways to manipulate data as well-formed XML. Firstly, there's the SQL XML support. Microsoft's implementation of SQL XML provides a simple configuration tool that allows devel ...
2-QueryOptimization
... Conceptually, generate all equivalent expressions by repeatedly executing the following step until no more expressions can be found for each expression found so far, use all applicable equivalence rules add newly generated expressions to the set of expressions found so far The above approach ...
... Conceptually, generate all equivalent expressions by repeatedly executing the following step until no more expressions can be found for each expression found so far, use all applicable equivalence rules add newly generated expressions to the set of expressions found so far The above approach ...
Microsoft Access 2010
... • Tap or click the Data Type column for the field you wish to set as a lookup field, and then tap or click the Data Type arrow to display the menu of available data types • Tap or click the Lookup Wizard, and then click the ‘I will type in the values that I want’ option button • Tap or click the Nex ...
... • Tap or click the Data Type column for the field you wish to set as a lookup field, and then tap or click the Data Type arrow to display the menu of available data types • Tap or click the Lookup Wizard, and then click the ‘I will type in the values that I want’ option button • Tap or click the Nex ...
Mike Towery Resume
... Resume Professional History I have over 35 years information technology experience in all phases of system development on a wide range of hardware, operating systems and enterprise-wide databases. I have installed and maintained numerous Oracle databases on numerous operating systems and performed a ...
... Resume Professional History I have over 35 years information technology experience in all phases of system development on a wide range of hardware, operating systems and enterprise-wide databases. I have installed and maintained numerous Oracle databases on numerous operating systems and performed a ...