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Database Searching
Database Searching

... • Run Blast first, then depending on your results run a finer tool (fasta, ssearch, SW, blocks, etc..) • Where possible use translated sequence. • E() < 0.05 is statistically significant, usually biologically interesting. Check also 0.05 < E() <10 because you might find interesting hits. • Pay atten ...
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... the industry standard for databaseindependent connectivity between the Java programming language and a wide range of databases – SQL databases and other tabular data sources, such as spreadsheets or flat files. • The JDBC API provides a call-level API for SQLbased database access. ...
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... which equality is de ned. Currently, there is just one built-in constraint ShowRecRow r that indicates that all values in row r are in the Show class. When interacting with the outside world or accessing object models, we have to deal with side-e ects. In Haskell, e ectful computations live in the I ...
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Access 2013 - The School District of Palm Beach County
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... Tables contain fields (or columns) that store different kinds of data, such as a name or an address, and records (or rows) that collect all the information about a particular instance of the subject, such as all the information about a department named Housing Administration. You can define a primar ...
Data Compression and Database Performance
Data Compression and Database Performance

... A number of researchers have considered text compression schemes based on letter frequency, as pioneered by Huffman [10, 11, 16, 17]. Other recent research has considered schemes based on string matching [22, 30, 32, 33] Comprehensive surveys of compression methods and schemes are given in [2, 18, 2 ...
Chapter 19: Distributed Databases
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... A query is a description of records that are to be retrieved from a database table. It helps answer questions about the information in a database. For example, “Which students received a G.P.A. of 3.0 or higher?” or “Which students are taking an English course?” When creating a query, the names of t ...
SAS® and Relational Databases: What You Should Know Before You Code
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... The terminology is different for a dataset versus a table also. Datasets have variables and observations. Tables have columns and rows. You will hear terms like 'primary key', 'foreign key', 'referential integrity' and 'index' much more with tables than with datasets. The structure of the data you w ...
Oracle Database In-Memory with Oracle`s JD Edwards EnterpriseOne
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... similar to SAS datasets. Tables are composed of rows (or records) that correspond to SAS rows or observations. Table rows are composed of columns (or fields), with each one named and defined as ...
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... be compositional mappings between databases, in this case probabilistic databases. This is a property taken for granted in relational databases. It allows for the definition of clean database update languages. 5. The ability to introduce additional uncertainty. This may appear to be a controversial ...
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... Database Cracking. Recently, a new approach, called database cracking, was introduced to the physical design problem. Cracking introduces the notion of continuous, incremental, partial and on demand adaptive indexing. Thereby, indices are incrementally built and refined during query processing. The ...
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... For categorical data, compute IDF(t) (resp QF(t)) ,to compute frequency of occurences of values in database and store the results in auxillary database tables.  For numeric data, an approximate representation of smooth function IDF() (resp(QF()) is stored, so that function value is retrieved at run ...
DriveRight - Davis Instruments
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... • A location field in the database facilitates “rolling up” data, making it possible to manage data from many locations in one database. • FTP support simplifies uploading data to higher levels in the organization while preserving location information. • Sophisticated reporting on driver safety and ...
Elmasri/Navathe, Fundamentals of Database Systems, Fourth Edition
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...  An object has four characteristics 1. Identifier: unique system-wide identifier 2. Name: unique within a particular database and/or program; it is optional 3. Lifetime: persistent vs transient 4. Structure: specifies how object is constructed by the type constructor and whether it is an atomic obj ...
13.1 Relational Databases
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... A table in a relational database consists of a set of columns. We call a column c a defining column if an executable function exists that maps any value of c to all sets of legal values for the other columns. This function may not refer to the table itself (e.g., do “select” queries). For example, i ...
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... by assuming a tree-based internal representation based on the XML Information Set Recommendation (Infoset). The Infoset model is modified in one significant way: the document information item of Infoset is replaced by a new kind of information item, XML root information item. ...
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Data Integrity

...  Data integrity is a fundamental component of information security. In its broadest use, “data integrity” refers to the accuracy, reliability and consistency of data stored over its entire life-cycle in a database, data warehouse, data mart or other construct. The term – Data Integrity - can be use ...
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Access Paths for Data Mining Query Optimizer

... answering a new one. We use the term materialized data mining view to refer to intentionally gathered and permanently stored results of a data mining query. Since not every materialized data mining view guarantees a correct data mining result (according to a full table scan performed on the original ...
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Database

A database is an organized collection of data. It is the collection of schemes, tables, queries, reports, views and other objects.The data is typically organized to model aspects of reality in a way that supports processes requiring information, such as modelling the availability of rooms in hotels in a way that supports finding a hotel with vacancies.A database management system (DBMS) is a computer software application that interacts with the user, other applications, and the database itself to capture and analyze data. A general-purpose DBMS is designed to allow the definition, creation, querying, update, and administration of databases. Well-known DBMSs include MySQL, PostgreSQL, Microsoft SQL Server, Oracle, Sybase and IBM DB2. A database is not generally portable across different DBMSs, but different DBMS can interoperate by using standards such as SQL and ODBC or JDBC to allow a single application to work with more than one DBMS. Database management systems are often classified according to the database model that they support; the most popular database systems since the 1980s have all supported the relational model as represented by the SQL language. Sometimes a DBMS is loosely referred to as a 'database'.
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