Database Design
... to change. errors.because not only are • Intelligent keys suffer from this problem they used as primary and foreign keys but they also have some business meaning associated with them • The biggest advantage for intelligent keys is that users understand what they mean whereas surrogate keys don't mak ...
... to change. errors.because not only are • Intelligent keys suffer from this problem they used as primary and foreign keys but they also have some business meaning associated with them • The biggest advantage for intelligent keys is that users understand what they mean whereas surrogate keys don't mak ...
Database Management Systems: An Overview
... – to accommodate the data growth and information need – manual file system structures were duplicated in the computer – Data Processing (DP) specialists wrote customized programs to • write, delete, update data (i.e. management) • extract and present data in various formats (i.e. report) ...
... – to accommodate the data growth and information need – manual file system structures were duplicated in the computer – Data Processing (DP) specialists wrote customized programs to • write, delete, update data (i.e. management) • extract and present data in various formats (i.e. report) ...
Corporate PPT Template - Universidad Nacional De Colombia
... Client can detach and reconnect Can be parallelized using PARALLEL ...
... Client can detach and reconnect Can be parallelized using PARALLEL ...
PPT - Bioinformatics Research Group at SRI International
... At BioCyc.org, select E. coli K12 as the database to search Search for compound N-methyltryptophan. Once the compound is displayed, select the command Compound->Show this compound in all databases About 28 databases (the number depends on the current version of BioCyc.org) are found containing that ...
... At BioCyc.org, select E. coli K12 as the database to search Search for compound N-methyltryptophan. Once the compound is displayed, select the command Compound->Show this compound in all databases About 28 databases (the number depends on the current version of BioCyc.org) are found containing that ...
Slide 1
... to change. errors.because not only are • Intelligent keys suffer from this problem they used as primary and foreign keys but they also have some business meaning associated with them • The biggest advantage for intelligent keys is that users understand what they mean whereas surrogate keys don't mak ...
... to change. errors.because not only are • Intelligent keys suffer from this problem they used as primary and foreign keys but they also have some business meaning associated with them • The biggest advantage for intelligent keys is that users understand what they mean whereas surrogate keys don't mak ...
September 2014 report
... (inconsistency and loss of data) generated by the three types of anomalies. Most candidates were able to provide an example of an update anomaly, but not so much for insert and delete anomalies. For example, a typical mistake is to assume that a new staff cannot be inserted if they do not have a roo ...
... (inconsistency and loss of data) generated by the three types of anomalies. Most candidates were able to provide an example of an update anomaly, but not so much for insert and delete anomalies. For example, a typical mistake is to assume that a new staff cannot be inserted if they do not have a roo ...
Slides from Lecture 11 - Courses - University of California, Berkeley
... • Check permissions on the individual tables in your database and make sure that they have read-access for the username your Web server uses to log in. • If your fields include large blocks of text, you'll want to include basic HTML coding within the text itself, including boldface, italics, and ...
... • Check permissions on the individual tables in your database and make sure that they have read-access for the username your Web server uses to log in. • If your fields include large blocks of text, you'll want to include basic HTML coding within the text itself, including boldface, italics, and ...
Eurotrace File System
... – Error table This stores any error records that occur when you import data to your EUROTRACE Dataset. – History table Stores relocated and updated records when you import data. – Flow table This file store the flow of the records per fields and operation – Operations table This is a log table that ...
... – Error table This stores any error records that occur when you import data to your EUROTRACE Dataset. – History table Stores relocated and updated records when you import data. – Flow table This file store the flow of the records per fields and operation – Operations table This is a log table that ...
Query encrypted databases practically
... Our demo assumes that a family census has been done by a government agency. Since the census data contains sensitive information, such as name, birth date and income, the government agency hopes that the census data can be encrypted in their databases, which might be deployed into a public cloud, an ...
... Our demo assumes that a family census has been done by a government agency. Since the census data contains sensitive information, such as name, birth date and income, the government agency hopes that the census data can be encrypted in their databases, which might be deployed into a public cloud, an ...
Normalization for Logical Design
... • Normalized data can minimize complexity of code that manipulates the data – Enhance the stability, “goodness” of database design • Normalized data tends to be easier to understand • Normalized data can be used by many different applications more easily ...
... • Normalized data can minimize complexity of code that manipulates the data – Enhance the stability, “goodness” of database design • Normalized data tends to be easier to understand • Normalized data can be used by many different applications more easily ...
SUPP PART-NO
... • Normalized data can minimize complexity of code that manipulates the data – Enhance the stability, “goodness” of database design • Normalized data tends to be easier to understand • Normalized data can be used by many different applications more easily ...
... • Normalized data can minimize complexity of code that manipulates the data – Enhance the stability, “goodness” of database design • Normalized data tends to be easier to understand • Normalized data can be used by many different applications more easily ...
Presentation
... Identity means that the values in a certain column are auto generated (for int columns) These values cannot be assigned manually Identity Seed – the starting number from which the values in the column begin to increase. Identity Increment – by how much each consecutive value is increased ...
... Identity means that the values in a certain column are auto generated (for int columns) These values cannot be assigned manually Identity Seed – the starting number from which the values in the column begin to increase. Identity Increment – by how much each consecutive value is increased ...
MySQL Fundamentals
... • MySQL uses Structured Query Language (SQL) • SQL is language for retrieving, updating, deleting, information from a database • Relational databases use a model that define data according to relationships • Other databases: Oracle, Informix, DB2 (IBM) Access (Microsoft), SQL Server, PostgreSQL8 ...
... • MySQL uses Structured Query Language (SQL) • SQL is language for retrieving, updating, deleting, information from a database • Relational databases use a model that define data according to relationships • Other databases: Oracle, Informix, DB2 (IBM) Access (Microsoft), SQL Server, PostgreSQL8 ...
lecture-5
... Efficient time management of Hardware (CPU), programmer(s), analyst(s) and user(s). Relational DBs use Normalisation to reduce data redundancy. ...
... Efficient time management of Hardware (CPU), programmer(s), analyst(s) and user(s). Relational DBs use Normalisation to reduce data redundancy. ...
Lab 7 Oracle SQL Instructions
... Lab 7 Oracle SQL Instructions The Oracle DBMS is located on the RA (ra.msstate.edu) server. To login to your Oracle database: netid@ra> sqlplus netid/password (use netid for password if it is your first time accessing Oracle) To view the tables contained in your database: SQL> select * from tab; (ne ...
... Lab 7 Oracle SQL Instructions The Oracle DBMS is located on the RA (ra.msstate.edu) server. To login to your Oracle database: netid@ra> sqlplus netid/password (use netid for password if it is your first time accessing Oracle) To view the tables contained in your database: SQL> select * from tab; (ne ...
Chapter 10
... • A foreign key allows Visual Basic to link (or join) two tables from a relational database • When the two tables Cities and Countries from Megacities.accdb are joined based on the foreign key Cities.country, the result is the table in the next slide. • The record for each city is expanded to show i ...
... • A foreign key allows Visual Basic to link (or join) two tables from a relational database • When the two tables Cities and Countries from Megacities.accdb are joined based on the foreign key Cities.country, the result is the table in the next slide. • The record for each city is expanded to show i ...
A Comparsion of Databases and Data Warehouses
... 1960 - the first database management system 1970 - the first relational model 1980 - distributed database systems and database machines 1990 - object-oriented databases 2000 - XML database ...
... 1960 - the first database management system 1970 - the first relational model 1980 - distributed database systems and database machines 1990 - object-oriented databases 2000 - XML database ...
Data and Knowledge Management - Jui
... • Provides several pieces of information about each attribute in the database including: - Name - Key (is it a key or part of a key) - Data Type (date, alpha-numeric, numeric, etc.) - Valid Value (the format or numbers allowed) • Can be used to enforce Business Rules which are captured by the databa ...
... • Provides several pieces of information about each attribute in the database including: - Name - Key (is it a key or part of a key) - Data Type (date, alpha-numeric, numeric, etc.) - Valid Value (the format or numbers allowed) • Can be used to enforce Business Rules which are captured by the databa ...
lect24
... Multidimensional data can be stored physically in a (disk-resident, persistent) array; called MOLAP systems. Alternatively, can store as a relation; called ROLAP systems. The main relation, which relates dimensions to a measure, is called the fact table. Each dimension can have additional attribut ...
... Multidimensional data can be stored physically in a (disk-resident, persistent) array; called MOLAP systems. Alternatively, can store as a relation; called ROLAP systems. The main relation, which relates dimensions to a measure, is called the fact table. Each dimension can have additional attribut ...
The NEON data model, accessed through
... • A netCDFHandler class that can write Java DataResult objects into NetCDF files. This file-creation is done lazily. • An overall CDS layer that thus offers NEON's application developers a consistent interface -- NetCDF files -- whether the data is stored in NetCDF or in NEON's database. If desired, ...
... • A netCDFHandler class that can write Java DataResult objects into NetCDF files. This file-creation is done lazily. • An overall CDS layer that thus offers NEON's application developers a consistent interface -- NetCDF files -- whether the data is stored in NetCDF or in NEON's database. If desired, ...
Introduction to Database Systems
... • The enterprise data can be described as a set of entities and a set of relationships between them. • Entity – a data that pertains to, or describes some component of the enterprise • Each entity is characterized by a set of attributes ...
... • The enterprise data can be described as a set of entities and a set of relationships between them. • Entity – a data that pertains to, or describes some component of the enterprise • Each entity is characterized by a set of attributes ...
Microsoft Jet Database Engine
The Microsoft Jet Database Engine is a database engine on which several Microsoft products have been built. A database engine is the underlying component of a database, a collection of information stored on a computer in a systematic way. The first version of Jet was developed in 1992, consisting of three modules which could be used to manipulate a database.Database connect for MicrosoftJET stands for Joint Engine Technology, sometimes being referred to as Microsoft JET Engine or simply Jet. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine. It has since been superseded for general use, however, first by Microsoft Desktop Engine (MSDE), then later by SQL Server Express. For larger database needs, Jet databases can be upgraded (or, in Microsoft parlance, ""up-sized"") to Microsoft's flagship database product, SQL Server.However, this does not mean that a MS Jet (Red) database cannot match MS SQL Server in storage capacity. A 5 billion record MS Jet (Red) database with compression and encryption turned on requires about 1 terabyte of disk storage space, comprising hundreds of (*.mdb) files, each acting as partial table, and not as a database in itself.Over the years, Jet has become almost synonymous with Microsoft Access, to the extent that many people refer to a Jet database as an ""Access database"".