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Less_20
Less_20

... If a member of a log file group is lost, as long as the group still has at least one member: 1. Normal operation of the instance will not be affected. 2. You will receive a message in the alert log notifying you that a member can not be found. 3. Restore the missing log file by copying one of the re ...
extent
extent

... tablespace UNIFORM SIZE : Require the specified extent size for all tables and other objects created in the tablespace Oracle9i Database Administrator: Implementation and Administration ...
Lecture Notes for SSC
Lecture Notes for SSC

... Efficient implementation Integrity, fault tolerance, security … Standard (and bespoke) interfaces ...
Paper-less Reporting: Online Data Review and Analysis Using SAS/PH-Clinical Software
Paper-less Reporting: Online Data Review and Analysis Using SAS/PH-Clinical Software

... Although SAS/PH-Clinical is equipped with many powerful features, the pilot programs done at SmithKline Beecham have discovered some major areas which require further enhancement in addition to minor issues. These include: Figure 7 ...
Intelligent Information Retrieval and Web Search
Intelligent Information Retrieval and Web Search

... – Initial exploration of text retrieval systems for “small” corpora of scientific abstracts, and law and business documents. – Development of the basic Boolean and vectorspace models of retrieval. – Prof. Salton and his students at Cornell University are the leading researchers in the ...
Provable data privacy
Provable data privacy

... computed by evaluating the query on this universal instance. We can make use of the same procedure to find certain answers in the context of data privacy which solves the data privacy problem. Certain answers in the presence of key constraints are also studied in [14]. There, we independently develo ...
Data Mining - UCD School of Computer Science and
Data Mining - UCD School of Computer Science and

Dbvisit Software - Partner Presentation Template
Dbvisit Software - Partner Presentation Template

... • Manual Scripting • Lacks documentation, support, upgrades • No guarantee all contingencies considered • Not user friendly, no reports, • Double Take • Copies data blocks – not transaction aware • No protection against database corruption • No reporting of time delay • Ok for file systems, could be ...
while($row=mysql_fetch_array($result))
while($row=mysql_fetch_array($result))

... Solaris and so on. Yahoo and Google are two big top companies, and they also use MySQL on its many application. PHP is probably the most common language used with a MySQL database, but almost all popular high level programming languages can work with MySQL using some special functions for this. Of c ...
DB2_Miracle
DB2_Miracle

... Not Null If a column in a table is specified as Not Null, then it’s not possible to insert a null into that column. It can be implemented with create and alter commands. When we implement the Not Null constraint with alter command there should not be any null values in the existing table. ...
Automated Question Answering Using Question Templates that
Automated Question Answering Using Question Templates that

... The simplest query expansion is stemming of words, which allows matching inflections of the words. The question assistant uses a stem dictionary, which enables better control over the stems and works equally well with English and non-English words, as well as exotic proper names. The stem dictionary ...
CSc-340 08a
CSc-340 08a

... E.g., methods to get parameter values from Web forms, and to send HTML text back to client ...
pstmt.setInt(1, 100)
pstmt.setInt(1, 100)

... • As we saw last week, some queries can’t be computed in SQL. • PL/pgSQL includes more programming tools than SQL • However, sometimes using PL/pgSQL will not be suitable: – If we require object-oriented programming – If accessing the database is a small part of a large Java application – Etc. • Why ...
Week 6
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... we had to add 10 new ARTICLE types, each with their own attributes? Marge Hohly ...
Using Views and Queries with DB2 and MS ACCESS Databases to Employ Your Business Rules
Using Views and Queries with DB2 and MS ACCESS Databases to Employ Your Business Rules

... EXAMPLES OF RULES AND VIEWS data new errors / view=new; set old; ...
Structured Query Language
Structured Query Language

... may be calculated by using the GROUP BY clause. ...
Chapter 7 Introduction to SQL
Chapter 7 Introduction to SQL

... frequently used sort key) Selecting File organizations for indexes appropriate to the way the indexes are used. Data clustering so that related rows of frequently joined tables are stored close together in secondary storage Statistics maintenance about tables and their indexes so that DBMS can find ...
Distributed DBMS Architecture
Distributed DBMS Architecture

... defines its structure, means, the components of the systems, function performed by each component and the relationship among components ...
Excel
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... Foreign Key – A foreign key (sometimes called a referencing key) is a key used to link two tables together. Typically you take the primary key field from one table and insert it into the other table where it becomes a foreign key (it remains a primary key in the original table). ...
Cracking the Database Store
Cracking the Database Store

... Query performance strongly depends on finding an execution plan that touches as few superfluous tuples as possible. The access structures deployed for this purpose, however, are non-discriminative. They assume every subset of the domain being indexed is equally important, and their structures cause ...
Introduction to XML
Introduction to XML

... plain text with headers (such as email headers) indicating the meaning of field, which suffered from the following limitations:  Did not allow for nested structures, no standard “type” language  Closely tied to low level document structure (lines, spaces, etc)  Each XML based standard defines val ...
Using SAS/AF FRAME Entries to Develop Client/Server Applications
Using SAS/AF FRAME Entries to Develop Client/Server Applications

... concept ofreusabillty. Client Utilities It is obvious that security needs will V31Y widely from application to application. In fact, ...
Win XP Notes
Win XP Notes

... Provides an interface for managing users and passwords, as well as the groups (XP professional only) that they belong to. Groups in Windows 2000/XP are simply an easy way of assigning or restricting rights and privileges to various aspects of Windows to multiple users. For example, if your computer ...
Locks and Concurrency
Locks and Concurrency

... transaction (depending on TRANSACTION ISOLATION LEVEL) o UPDLOCK – sets an update lock o XLOCK – specifies an exclusive lock to be held on a table or page o Example: SELECT * FROM Orders as O WITH (PAGLOCK) Isolation level of a transaction: o Syntax: SET TRANSACTION ISOLATION LEVEL
RDBMS Study Material Unit-2
RDBMS Study Material Unit-2

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Database model



A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.
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