Introduction to Data Modeling
... An important aspect of most every business is record keeping. In our information society, this has become an important aspect of business, and much of the world's computing power is dedicated to maintaining and using databases. Databases of all kinds pervade almost every business. All kinds of data, ...
... An important aspect of most every business is record keeping. In our information society, this has become an important aspect of business, and much of the world's computing power is dedicated to maintaining and using databases. Databases of all kinds pervade almost every business. All kinds of data, ...
notes #5
... • Terminology of relational model. • How tables are used to represent data. • Connection between mathematical relations and relations in the relational model. • Properties of database relations. • How to identify candidate, primary, and foreign ...
... • Terminology of relational model. • How tables are used to represent data. • Connection between mathematical relations and relations in the relational model. • Properties of database relations. • How to identify candidate, primary, and foreign ...
mod-3
... The SQL data-definition language (DDL) allows the specification of information about relations, including: The schema for each relation. The domain of values associated with each attribute. Integrity constraints And as we will see later, also other information such as ...
... The SQL data-definition language (DDL) allows the specification of information about relations, including: The schema for each relation. The domain of values associated with each attribute. Integrity constraints And as we will see later, also other information such as ...
Chapter 7 Summary ESTABLISHING TABLE
... Database Design for Mere Mortals Chapter 7 Summary ESTABLISHING TABLE STRUCTURES During this phase, a preliminary table list will be defined. Three procedures are used to develop this list. The first involves using the preliminary field list, the second involves using the list of subjects gathered ...
... Database Design for Mere Mortals Chapter 7 Summary ESTABLISHING TABLE STRUCTURES During this phase, a preliminary table list will be defined. Three procedures are used to develop this list. The first involves using the preliminary field list, the second involves using the list of subjects gathered ...
slides - cse.sc.edu
... attack: query-set-size control A query q(C) is permitted only if N-n |C| n , where n 0 is a parameter of the database and N is all the records in the database ...
... attack: query-set-size control A query q(C) is permitted only if N-n |C| n , where n 0 is a parameter of the database and N is all the records in the database ...
lesson20 - SCF Faculty Site Homepage
... • You use replication to put copies of the same data at different locations throughout the enterprise. • Common reasons to replicate are: – To move data closer to the user. – To reduce locking conflicts when multiple sites want to work with the same data. – To allow site autonomy so each location ca ...
... • You use replication to put copies of the same data at different locations throughout the enterprise. • Common reasons to replicate are: – To move data closer to the user. – To reduce locking conflicts when multiple sites want to work with the same data. – To allow site autonomy so each location ca ...
Data Sheet: Oracle Exadata Database Machine X4-8
... The second Exadata storage option in the new generation of X4-8 is the Exadata X5-2 High Capacity Storage Server. This server includes twelve 4 TB SAS disk drives (48 TB total) and four Flash Accelerator F160 NVMe PCIe cards with a total raw capacity of 6.4TB of flash memory. Exadata flash in a High ...
... The second Exadata storage option in the new generation of X4-8 is the Exadata X5-2 High Capacity Storage Server. This server includes twelve 4 TB SAS disk drives (48 TB total) and four Flash Accelerator F160 NVMe PCIe cards with a total raw capacity of 6.4TB of flash memory. Exadata flash in a High ...
Relationship Sets
... E.g. Suppose employees of a bank may have jobs (responsibilities) at multiple branches, with different jobs at different branches. Then there is a ternary relationship set between entity sets employee, job and branch Relationships between more than two entity sets are rare. Most ...
... E.g. Suppose employees of a bank may have jobs (responsibilities) at multiple branches, with different jobs at different branches. Then there is a ternary relationship set between entity sets employee, job and branch Relationships between more than two entity sets are rare. Most ...
Entity Sets - UCLA Computer Science
... 1. each A entity is associated with a unique entity from B and C ? 2. each pair of entities from (A, B) is associated with a unique C entity, and each pair (A, C) is associated with a unique B ? As we will see when we study Functional Dependencies only 2 is consistent and we will adopt it. ...
... 1. each A entity is associated with a unique entity from B and C ? 2. each pair of entities from (A, B) is associated with a unique C entity, and each pair (A, C) is associated with a unique B ? As we will see when we study Functional Dependencies only 2 is consistent and we will adopt it. ...
Chapter 4: SQL
... Perryridge branch select distinct customer-name from borrower, loan where borrower.loan-number = loan.loan-number and branch-name = “Perryridge” and (branch-name, customer-name) in (select branch-name, customer-name from depositor, account where depositor.account-number = account.account-number) N ...
... Perryridge branch select distinct customer-name from borrower, loan where borrower.loan-number = loan.loan-number and branch-name = “Perryridge” and (branch-name, customer-name) in (select branch-name, customer-name from depositor, account where depositor.account-number = account.account-number) N ...
Database Database overview
... Generating SQL for existing objects . . . Building SQL statements with SQL Assist . Starting System i5 Debugger. . . . . . Managing check pending constraints . . . . Importing and exporting data . . . . . . Getting started with SQL . . . . . . . . . Creating a schema . . . . . . . . . . Creating and ...
... Generating SQL for existing objects . . . Building SQL statements with SQL Assist . Starting System i5 Debugger. . . . . . Managing check pending constraints . . . . Importing and exporting data . . . . . . Getting started with SQL . . . . . . . . . Creating a schema . . . . . . . . . . Creating and ...
Hibernate
... Hibernate: No problem! Change three lines in a Hibernate configuration file! Fed up manually creating table structures using the ‘CREATE TABLE’ statement? Hand-written JDBC Code: Keep doing it (or use a UI) Hibernate: ONE line of code can be used to create ALL of your tables automatically, in whiche ...
... Hibernate: No problem! Change three lines in a Hibernate configuration file! Fed up manually creating table structures using the ‘CREATE TABLE’ statement? Hand-written JDBC Code: Keep doing it (or use a UI) Hibernate: ONE line of code can be used to create ALL of your tables automatically, in whiche ...
XML Publishing - Computer Science, NMSU
... More specifically, publishing XML data involves joining tables, selecting and projecting the data that needs to be exported, creating XML hierarchies; and processing values in an application specific manner. ...
... More specifically, publishing XML data involves joining tables, selecting and projecting the data that needs to be exported, creating XML hierarchies; and processing values in an application specific manner. ...
ppt - Spatial Database Group
... Transaction Boundary Choices One transaction for the entire form One transaction for the main form and one transaction for all subform records One transaction for the main form and separate transactions for each subform ...
... Transaction Boundary Choices One transaction for the entire form One transaction for the main form and one transaction for all subform records One transaction for the main form and separate transactions for each subform ...
MulTe: A Multi-Tenancy Database Benchmark
... is chosen, the question remains how to determine good values for the parameters. Again, the challenge is to find a compromise between expressiveness and the feasibility of the task to come up with parameters for possibly hundreds of instances. Our approach is to pick parameter values independently f ...
... is chosen, the question remains how to determine good values for the parameters. Again, the challenge is to find a compromise between expressiveness and the feasibility of the task to come up with parameters for possibly hundreds of instances. Our approach is to pick parameter values independently f ...
Log Server Troubleshooting Guide
... 4. Check the file paths set up for cache and BCP files on the Settings > Reporting > Log Server page to make sure the folders exist, and that Log Server has permission to write to them. 5. If TestLogServer is being used, make sure it is set up to forward data to Log Server. (See Using TestLogSe rver ...
... 4. Check the file paths set up for cache and BCP files on the Settings > Reporting > Log Server page to make sure the folders exist, and that Log Server has permission to write to them. 5. If TestLogServer is being used, make sure it is set up to forward data to Log Server. (See Using TestLogSe rver ...
ER Model 2 - Department of Computer Science
... the higher-level entity set must belong to at least one of the lower-level entity sets within a generalization. total : an entity must belong to one of the lower-level entity sets partial: an entity need not belong to one of the lower-level entity sets ...
... the higher-level entity set must belong to at least one of the lower-level entity sets within a generalization. total : an entity must belong to one of the lower-level entity sets partial: an entity need not belong to one of the lower-level entity sets ...
SQL_Saturday_#600_
... Copy working tables to permanent tables SET @ CurrSeqNbr = @ CurrSeqNbr + 1; ...
... Copy working tables to permanent tables SET @ CurrSeqNbr = @ CurrSeqNbr + 1; ...
Informatica PowerCenter - 9.x. - Partitioning Oracle Sources in
... Configure key range partitioning to partition Oracle data based on the value of a port or set of ports. With key range partitioning, the PowerCenter Integration Service distributes rows of source data based the ports that you define as partition keys. The PowerCenter Integration Service compares the ...
... Configure key range partitioning to partition Oracle data based on the value of a port or set of ports. With key range partitioning, the PowerCenter Integration Service distributes rows of source data based the ports that you define as partition keys. The PowerCenter Integration Service compares the ...
Manual - Animated DataBase Courseware
... relationship because there are two entities involved. It is non-identifying because one does not identify the other one. There is not an identifying/weak entity such as the one described in Figure I.1.4. The numbers on each side of the relationship indicate the cardinality. Note that when there is o ...
... relationship because there are two entities involved. It is non-identifying because one does not identify the other one. There is not an identifying/weak entity such as the one described in Figure I.1.4. The numbers on each side of the relationship indicate the cardinality. Note that when there is o ...
Keyword-based Search in a Relational Database
... Today‟s most widely used search engines enable users to express a search query by means of one or more keywords. This query can express a descriptive phrase or isn‟t more than a single term, coherent with a specific information need. The user can query the available data without having to know any q ...
... Today‟s most widely used search engines enable users to express a search query by means of one or more keywords. This query can express a descriptive phrase or isn‟t more than a single term, coherent with a specific information need. The user can query the available data without having to know any q ...
OLTP performance comparison: Solid-state drives vs. hard disk drives
... We attached the HDD storage array to the server via an LSI Logic MegaRAID SAS 8888ELP RAID Controller. We conducted all tests in a climate-controlled room. Our server contained eight drives. We configured the first two internal server drives using RAID 0 for the operating system, SQL Server 2008 sof ...
... We attached the HDD storage array to the server via an LSI Logic MegaRAID SAS 8888ELP RAID Controller. We conducted all tests in a climate-controlled room. Our server contained eight drives. We configured the first two internal server drives using RAID 0 for the operating system, SQL Server 2008 sof ...
Using the ORACLE LIBNAME Engine to Reduce the Time it Takes to Extract Data From an ORACLE Database
... database is used for its ability to store, process, and retrieve data. Access to the database, however, is provided through a series of consolidated SAS® datasets. Consolidated SAS data combine data from an ORACLE parent table with information from multiple child tables. These SAS datasets are the p ...
... database is used for its ability to store, process, and retrieve data. Access to the database, however, is provided through a series of consolidated SAS® datasets. Consolidated SAS data combine data from an ORACLE parent table with information from multiple child tables. These SAS datasets are the p ...
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"".