Overview of 585 - usc dblab - University of Southern California
... 2006. Last paragraph of the paper: “Finally, we have found that there are significant advantages to building our own storage solution at Google. We have gotten substantial amount of flexibility from designing our own data model for Bigtable. In addition, our control over Bigtable’s implementation, a ...
... 2006. Last paragraph of the paper: “Finally, we have found that there are significant advantages to building our own storage solution at Google. We have gotten substantial amount of flexibility from designing our own data model for Bigtable. In addition, our control over Bigtable’s implementation, a ...
Why do I see this?
... “Data management is the development, execution and supervision of plans, policies, programs and practices that control, protect, deliver and enhance the value of data and information assets” (DAMA Data Management Body of Knowledge) ...
... “Data management is the development, execution and supervision of plans, policies, programs and practices that control, protect, deliver and enhance the value of data and information assets” (DAMA Data Management Body of Knowledge) ...
Database Ph.D. Qualifying Exam – FALL 2010 (Nov 1, 2010) NOTES:
... processing of location queries. The goal is to avoid constant re-evaluation of the pending location queries, while ensuring the correctness of their answers within certain tolerance bounds (delta). However, most of these indexing algorithms have to deal with the increased time complexity as the numb ...
... processing of location queries. The goal is to avoid constant re-evaluation of the pending location queries, while ensuring the correctness of their answers within certain tolerance bounds (delta). However, most of these indexing algorithms have to deal with the increased time complexity as the numb ...
DDL,DCL and DML
... It is a subset of SQL that is used to define, describe and change the structure of database. It can change and record the information in Data Dictionary DDL Statements: 1. Create Table 2. Desc Table 3. Alter Table 4. Drop Table 1. Create Table: ...
... It is a subset of SQL that is used to define, describe and change the structure of database. It can change and record the information in Data Dictionary DDL Statements: 1. Create Table 2. Desc Table 3. Alter Table 4. Drop Table 1. Create Table: ...
comp4_unit6a_lecture_slides
... Data Storage Prior to Databases Disk file storage Lists stored on disk Problems/shortcomings of disk file storage Data was repeated in multiple disk files (each file needed to have customer identification data) Only key data is repeated in a database. Component 4/Unit 6a ...
... Data Storage Prior to Databases Disk file storage Lists stored on disk Problems/shortcomings of disk file storage Data was repeated in multiple disk files (each file needed to have customer identification data) Only key data is repeated in a database. Component 4/Unit 6a ...
ch01
... – An entity is a person, place, event or thing, about which we wish to store information – A relationship is a connection between entities, about which we wish to store information – A relationship can be considered as a special case of entities – Entities have properties – Properties are the charac ...
... – An entity is a person, place, event or thing, about which we wish to store information – A relationship is a connection between entities, about which we wish to store information – A relationship can be considered as a special case of entities – Entities have properties – Properties are the charac ...
bar
... The bar and beer together are the key for Sells: CREATE TABLE Sells ( bar CHAR(20), beer ...
... The bar and beer together are the key for Sells: CREATE TABLE Sells ( bar CHAR(20), beer ...
Presenter
... – Displayed when creating or opening an Access database – You can use the Objects toolbar to access the different objects that make up a database ...
... – Displayed when creating or opening an Access database – You can use the Objects toolbar to access the different objects that make up a database ...
INSS 651
... How data is represented in database? Hierarchical (see page 34) Network (see page 35) ..Simple ..Complex Relational (page 36) Object-oriented ...
... How data is represented in database? Hierarchical (see page 34) Network (see page 35) ..Simple ..Complex Relational (page 36) Object-oriented ...
Data Modeling
... • DBMS - a group of programs used as an interface between a database and application programs. • Data mining - the automated discovery of patterns and relationships in a data warehouse. ...
... • DBMS - a group of programs used as an interface between a database and application programs. • Data mining - the automated discovery of patterns and relationships in a data warehouse. ...
5.01 Outline Notes
... The relationship is developed when common fields in the tables are linked, such as the Customer ID field in a Customer Address table and the Customer ID field in a Purchases table. ...
... The relationship is developed when common fields in the tables are linked, such as the Customer ID field in a Customer Address table and the Customer ID field in a Purchases table. ...
DataMart
... • 2008 Windows Server R2 Standard or higher, 2008 SQL Server R2 Standard or 2012 SQL Server Business Intelligence or Enterprise edition, Windows 7 64bit with 4gigs of RAM, 2010 Microsoft Excel with 2010/2012 Microsoft PowerPivot (Free downloadable add-on) ...
... • 2008 Windows Server R2 Standard or higher, 2008 SQL Server R2 Standard or 2012 SQL Server Business Intelligence or Enterprise edition, Windows 7 64bit with 4gigs of RAM, 2010 Microsoft Excel with 2010/2012 Microsoft PowerPivot (Free downloadable add-on) ...
Compound primary key
... until they are primitive. • Processes may be decomposed to different levels. • Numbering conventions – Level One diagram of Process 2.0: 2.1, 2.2 – Level Two diagram of Process 1.2: 1.2.1, ...
... until they are primitive. • Processes may be decomposed to different levels. • Numbering conventions – Level One diagram of Process 2.0: 2.1, 2.2 – Level Two diagram of Process 1.2: 1.2.1, ...
Document
... • Can retrieve data from a database. • Can insert records in a database. • Can update records in a database. ...
... • Can retrieve data from a database. • Can insert records in a database. • Can update records in a database. ...
Chapter 5 Concept Description Characterization
... application of OLAP operations, such as drill-down, roll-up, dicing, and slicing, are directed and controlled by the users. Although the control in most OLAP systems is quite user-friendly, users do require a good understanding of the role of each dimension. Furthermore, in order to find a satisfact ...
... application of OLAP operations, such as drill-down, roll-up, dicing, and slicing, are directed and controlled by the users. Although the control in most OLAP systems is quite user-friendly, users do require a good understanding of the role of each dimension. Furthermore, in order to find a satisfact ...
lecture 2 - i. t creative plus
... • Data models can be categorized according to the types of concepts they use to describe the database structure. • High-level or conceptual data models provide concepts that are close to the way many users perceive data ▫ Entity-Relationship model is a popular high-level conceptual data model. ...
... • Data models can be categorized according to the types of concepts they use to describe the database structure. • High-level or conceptual data models provide concepts that are close to the way many users perceive data ▫ Entity-Relationship model is a popular high-level conceptual data model. ...
CS194Lec03DataModels - b
... • “With CouchDB, no schema is enforced, so new document types with new meaning can be safely added alongside the old.” • A CouchDB document is an object that consists of named fields. Field values may be: – strings, numbers, dates, "Subject": "I like Plankton" – ordered lists, associative maps ...
... • “With CouchDB, no schema is enforced, so new document types with new meaning can be safely added alongside the old.” • A CouchDB document is an object that consists of named fields. Field values may be: – strings, numbers, dates, "Subject": "I like Plankton" – ordered lists, associative maps ...
2008_0904MSCPDM
... • All data would be stored in one large relational database, making it efficient to consolidate, retrieve, and analyze large data sets across disciplines over a 50-year period. • Maximizes the availability of information/data to managers, Steering Committee, scientific staff, and general public at d ...
... • All data would be stored in one large relational database, making it efficient to consolidate, retrieve, and analyze large data sets across disciplines over a 50-year period. • Maximizes the availability of information/data to managers, Steering Committee, scientific staff, and general public at d ...
Week 8-Still More SQL- Alter, Create, Metadata
... } catch (IOException ex) {System.out.println ("IO Exception.");} catch (ClassNotFoundException exc) {System.out.println ("Class Not Found Exception");} catch (SQLException exs) {System.out.println ("SQL Exception");} } // insertNewData With two tables, you can perform more complicated queries that g ...
... } catch (IOException ex) {System.out.println ("IO Exception.");} catch (ClassNotFoundException exc) {System.out.println ("Class Not Found Exception");} catch (SQLException exs) {System.out.println ("SQL Exception");} } // insertNewData With two tables, you can perform more complicated queries that g ...
PowerPoint Presentation handout
... could either prevent, or provide a warning, if th the right data i ht d t validation lid ti rules l are iin place. l 1. Data out of range 2. Using the wrong type of variable, entering mixed character and numeric data – ie 98.6F 3. Loss of information due to rounding errors ...
... could either prevent, or provide a warning, if th the right data i ht d t validation lid ti rules l are iin place. l 1. Data out of range 2. Using the wrong type of variable, entering mixed character and numeric data – ie 98.6F 3. Loss of information due to rounding errors ...