database sequences and auto value fields

... takes new tuples and a current state and output new tuples and a modified state and pass, prop, keep are three behavior functions that take punctuation marks and state as input and returns additional ... IBM stock values when the value of DEC is greater than that of HP In the following example, the UDA only needs to store the last three-day values for IBM and compares the values of DEC and HP to ... etc.) always return a sequence of length one and they are all nonmonotonic, and therefore blocking Continuous count and sum are monotonic and nonblocking, and thus suitable for continuous queries...

Ngày tải lên: 23/03/2014, 12:20

... (3) alpha and beta (for proteins with a-helices and b-strands that are largely interspersed), (4) alpha plus beta (for those in which a-helices and b-strands are largely segregated) and (5) multi-domain ... classification The scop database was originally created as a tool for understanding protein evolution through sequence-structure relationships and determining if new sequences and new structures are ... 1994) The scop database contains links to a number of other facilities and databases in the world Several interactive viewers can be linked with scop using PDB co-ordinates The location and nature...

Ngày tải lên: 23/03/2014, 12:20

... the star discrepancy and produce low-discrepancy sequences led to the introduction of (t, m, s)-nets and (t, s) -sequences Sobol’ [48] first constructed (t, s) -sequences in base and Faure [8] later ... Low-Discrepancy Sequences The most powerful known methods for the construction of low-discrepancy point sets and sequences are based on the theory of (t, m, s)-nets and (t, s )sequences, which ... s)-nets and (t, s) -sequences are based on the so-called digital method We refer to (t, m, s)-nets and (t, s )sequences which are constructed via the digital method as digital (t, m, s)nets and digital...

Ngày tải lên: 14/09/2015, 18:43

... command to back up database files and archived redo logs Chapter 17, "Performing User-Managed Database Flashback and Recovery" This chapter describes how to use the SQL*Plus FLASHBACK DATABASE and ... primary database that is updated using archived logs created by the primary database RMAN can create or back up a standby database You can fail over to the standby database if the primary database ... to the Target Database and Recovery Catalog from the Command Line 5-3 vi Connecting to the Target Database and Recovery Catalog from the RMAN Prompt Connecting to an Auxiliary Database ...

Ngày tải lên: 16/10/2013, 11:15

... Copies and Backup Sets Full and Incremental Datafile Backups RMAN Backups and Tags Backing Up Database Files and Archived Logs with RMAN Making Consistent and ... Recovery Database Restore and Recovery with RMAN: Overview Scope and Limitations of this Chapter Restore and Recovery with Enterprise Manager Preparing and Planning Database ... for database administrators who perform backup and recovery of an Oracle database server To use this document, you need to know the following: s s Relational database concepts and basic database...

Ngày tải lên: 18/10/2013, 17:15

... Relational Database Design and Implementation Louis Davidson With Kevin Kline, Scott Klein, and Kurt Windisch 8662FM.qxp 7/28/08 6:19 PM Page ii Pro SQL Server 2008 Relational Database Design and Implementation ... Data Structures Database and Schema Tables, Rows, and Columns The Information ... 426 Monitoring and Auditing 429 Server and Database Audit 430 Watching...

Ngày tải lên: 29/10/2013, 15:15

... on database design Louis’s primary areas of interest are database architecture and coding in T-SQL, and he has experience designing many databases and writing thousands of stored procedures and ... Server 2005 Database Design and Optimization (Apress, 2006), and Database Benchmarking: Practical Methods for Oracle & SQL Server (Rampant, 2007) Kevin contributes to SQL Server Magazine and Database ... times, we’ll discuss, debate, and celebrate the topic of database design and how critical it is for any datacentric application Database design is part science and part art There’s a science...

Ngày tải lên: 29/10/2013, 15:15

... which methods and properties are shared by movie clip and text field instances In addition to the properties and methods discussed thus far, text fields have numerous unique methods and properties ... • • • • • autoSize This property determines whether a text field expands and contracts its borders automatically to accommodate the amount of text it contains A text field's width and height ... two text fields are created and their properties set The statusField_txt text field appears below the movingField_txt text field, and the box_mc movie clip instance has the same position and size...

Ngày tải lên: 07/11/2013, 15:15

... introduces the following core relational database structures and concepts: • Database and schema • Tables, rows, and columns • The Information Principle • Keys • Missing values (nulls) As a person reading ... Guaranteed Access Rule: Each and every datum (atomic value) in a relational database is guaranteed to be logically accessible by resorting to a table name, primary key value, and column name The second ... the objects in your database as far as is possible It consists of a standard set of views used to view the system metadata and should exist on all database servers of any brand • In the SQL Server–specific...

Ngày tải lên: 08/11/2013, 21:15

... consider: • Any value concatenated with NULL is NULL NULL can represent any valid value, so if an unknown value is concatenated with a known value, the result is still an unknown value • All math ... youth and we folks whose hair has turned a different color) No, this value is good only for looking you up in a database Usually a true surrogate key is never shared with any users It will be a value ... column is not known or that the value is irrelevant Often, a value outside of legitimate actual range (sometimes referred to as a sentinel value) is used to denote this value For decades, programmers...

Ngày tải lên: 08/11/2013, 21:15

... 286 Grid Databases 10 Transactions in Distributed and Grid Databases 291 10.1 Grid Database Challenges 292 10.2 Distributed Database Systems and Multidatabase Systems 10.2.1 Distributed Database ... Sons, Inc., Publication High-Performance Parallel Database Processing and Grid Databases High-Performance Parallel Database Processing and Grid Databases David Taniar Monash University, Australia ... parallel operation and can diminish both speed up and scale up, particularly: (i) start up and consolidation costs, (ii) interference and communication, and (iii) skew Start Up and Consolidation...

Ngày tải lên: 21/01/2014, 18:20

... models for parallel database processing can be found in Hameurlain and Morvan (DEXA 1995), Graefe and Cole (ACM TODS 1995), Shatdal and Naughton (SIGMOD 1995), and Ganguly, Goel, and Silberschatz ... exists in nontraditional database systems, such as spatial and geo-spatial databases (Gao et al 2006; Tamura et al 2001), video databases (Geisler 2003), and time series databases (Duan et al 2006; ... strengths and weaknesses of the following parallel database architectures: ž Shared-everything ž Shared-nothing ž Shared-something 1.9 Describe the relationship between parallel databases and Grid databases...

Ngày tải lên: 21/01/2014, 18:20

... Iyer and Dias (ICDE 1990) and DeWitt et al (1992) discuss systems issues in parallel database sorting Parallel sorting for databases uses external sorting methods Yamane and Take (1987) and Zhao ... have values that are smaller than those in bucket B, and values in bucket B are smaller than those in bucket C, etc Then buckets A to G are in order The values in each bucket are to be sorted, and ... of lecturers and courses from the same department” The query joins table Lecturer and table Course, and the join attribute is Ldept of Lecturer and attribute Cdept of Course In our database schema,...

Ngày tải lên: 21/01/2014, 18:20

... the join query result and the product of the two tables R and S For example, if there are 100 and 200 records from table R and table S, respectively, and the join between R and S produces 50 records, ... involve only one aggregate function and a single join High-Performance Parallel Database Processing and Grid Databases, by David Taniar, Clement Leung, Wenny Rahayu, and Sushant Goel Copyright  2008 ... table S jRj and jSj Number of records in table R and table S jRi j and jSi j Number of records in table R and table S on node i P Page size H Hash table size Query parameters πR and πS Projectivity...

Ngày tải lên: 21/01/2014, 18:20

... spread spread spread, but spread spread spread, but spread not random randomly randomly not random randomly randomly not random randomly Figure 7.26 A comparative table for parallel multi-index ... textbooks, like Elmasri and Navathe (2007) and Ramakrishnan and Gehrke (2000) cover basic indexing structures (e.g., BC trees) for database systems Indexing for parallel database systems was covered ... of the two extremes, the starting and ending values of each range, must be determined Once these values have been obtained, each processor knows where to start and where to stop when merging An...

Ngày tải lên: 21/01/2014, 18:20

... and 33, and processors), load balancing is achieved by spreading and combining partitions to create more equal loads For example, buckets 11, 22 and 23 are placed at processor 1, buckets 13 and ... technique, Ž Divide and broadcast technique, Ž One-way divide and partial broadcast technique, and Ž Two-way divide and partial broadcast technique b Adopting the two-way divide and partial broadcast ... ceil.x//andg.n x/ < g.n f loor x// Noting that both f x/ and g.x/ are decreasing functions, and since x < ceil.x/, hence f x/ < f ceil.x//, and since x > floor.x/, hence n x < n floor.x/, and g.n...

Ngày tải lên: 21/01/2014, 18:20

... main differences between distributed databases and multidatabase systems 10.3 Discuss the suitability of parallel databases, distributed databases, and multidatabase systems in the Grids 10.4 Describe ... broader sense, a multidatabase system can be defined as an interconnected collection of autonomous databases The fundamental concept of a multidatabase system is autonomy Autonomy refers to the ... requirements separate the two database systems Local database systems in multidatabase systems 298 Chapter 10 Transactions in Distributed and Grid Databases Global Data Dictionary Multidatabase/ Global DBMS...

Ngày tải lên: 21/01/2014, 18:20