Lec 1
... What are indexes? • Like the index in a book, they are tables that point to records, that can be read more quickly than scanning the whole book • They are usually B-trees • The key can be one attribute or made up of multiple attributes • There is usually one or more indexes for each table ...
... What are indexes? • Like the index in a book, they are tables that point to records, that can be read more quickly than scanning the whole book • They are usually B-trees • The key can be one attribute or made up of multiple attributes • There is usually one or more indexes for each table ...
Physical Database Design
... – Processing an index is more efficient than processing a table – for reads • Index is usually small, relative to the table –Can be held entirely in memory • The smaller the index value, the more entries per block the more likely the index will be in memory ...
... – Processing an index is more efficient than processing a table – for reads • Index is usually small, relative to the table –Can be held entirely in memory • The smaller the index value, the more entries per block the more likely the index will be in memory ...
Moultrie Tech
... ◦ Easy tracking of information. ◦ Ability to collect and update form information directly from the source. ◦ Accessibility to and use of information from multiple sources. ◦ Easy to learn its use and manage. ◦ Availability of product support. ...
... ◦ Easy tracking of information. ◦ Ability to collect and update form information directly from the source. ◦ Accessibility to and use of information from multiple sources. ◦ Easy to learn its use and manage. ◦ Availability of product support. ...
Chapter 12 - KSU Web Home
... Database schema A specification of the logical structure of the data stored in the database Database query A request to retrieve data from a database ...
... Database schema A specification of the logical structure of the data stored in the database Database query A request to retrieve data from a database ...
pgdca-02 programming with c
... Data-Base concept: Database, DBMS, Concept of Schema, View, RDBMS, Concept of Keys(Super, Candidate, Primary, Foreign), Normalization (1NF, 2-NF, 3-NF), Operators of Relational Algebra ( Select , Project , Union , Intersection , Set Difference, Cartesian Product, Join operations). Introduction & fea ...
... Data-Base concept: Database, DBMS, Concept of Schema, View, RDBMS, Concept of Keys(Super, Candidate, Primary, Foreign), Normalization (1NF, 2-NF, 3-NF), Operators of Relational Algebra ( Select , Project , Union , Intersection , Set Difference, Cartesian Product, Join operations). Introduction & fea ...
Computer Programming Lab II - The Institute of Finance
... DELETE records from tables Queries records in Tables with SELECT statement ...
... DELETE records from tables Queries records in Tables with SELECT statement ...
Creating a Database
... In all IS, data resources must be organized and structured in some logical manner so that they can be accessed easily, processed efficiently, retrieved quickly, and managed effectively. ...
... In all IS, data resources must be organized and structured in some logical manner so that they can be accessed easily, processed efficiently, retrieved quickly, and managed effectively. ...
Database Systems
... Microsoft offers SQL-Server, plus Microsoft Access for the cheap DBMS on the desktop ...
... Microsoft offers SQL-Server, plus Microsoft Access for the cheap DBMS on the desktop ...
Components of a Database System
... – From more than one relations, generate one relation that satisfies given conditions 1. SQL(Structured Query Language): Data access language (CH 9) 2. QBE(Query By Example): (Figure 2-8) 3. QBF(Query By Form): user types query constraints on a data entry form and press search button ...
... – From more than one relations, generate one relation that satisfies given conditions 1. SQL(Structured Query Language): Data access language (CH 9) 2. QBE(Query By Example): (Figure 2-8) 3. QBF(Query By Form): user types query constraints on a data entry form and press search button ...
DBI tutorial
... Every database system is a little different Every database system has a library, which is different from each other A extra layer is added to solve the difference among different database systems That's what Perl's DBI module is all about Using DBI, the programmer doesn’t need to know the details of ...
... Every database system is a little different Every database system has a library, which is different from each other A extra layer is added to solve the difference among different database systems That's what Perl's DBI module is all about Using DBI, the programmer doesn’t need to know the details of ...
Get PPT file
... • Distribute loading (collection on one, reporting on other). • Effectively serves are real-time database backup. ...
... • Distribute loading (collection on one, reporting on other). • Effectively serves are real-time database backup. ...
Melissa Mulvey
... Programmed using SQL server to do table compares, table updates and processing against multiple views. Managed an issue consolidation list for a key Medicare Application Tool. Updated a SQL server integration services package to run with database table changes. Temple University, Philadelphia, ...
... Programmed using SQL server to do table compares, table updates and processing against multiple views. Managed an issue consolidation list for a key Medicare Application Tool. Updated a SQL server integration services package to run with database table changes. Temple University, Philadelphia, ...
Document
... 1) Security: controlling access to database to protect database 2) Integrity: ensuring that data is accurate or collect and consistence, minimizing redundancy of record. 3) Concurrency control: allow multi-user to access/operate on shared database simultaneously. 4) Reliability: Rollback database (a ...
... 1) Security: controlling access to database to protect database 2) Integrity: ensuring that data is accurate or collect and consistence, minimizing redundancy of record. 3) Concurrency control: allow multi-user to access/operate on shared database simultaneously. 4) Reliability: Rollback database (a ...
DB_Intro_music
... – upload script files to create Oracle database objects (Scripts tab) – browse existing database object data dictionary information (Data tab) ...
... – upload script files to create Oracle database objects (Scripts tab) – browse existing database object data dictionary information (Data tab) ...
Data Warehousing
... • Show you an example of a small data warehouse component • Talk about how you can repeat what I’ve ...
... • Show you an example of a small data warehouse component • Talk about how you can repeat what I’ve ...
Introduction to Database Systems
... XQuery from the Experts, Katz, Ed. Fundamentals of Database Systems, Elmasri, Navathe Foundations of Databases, Abiteboul, Hull, Vianu Data on the Web, Abiteboul, Buneman, Suciu ...
... XQuery from the Experts, Katz, Ed. Fundamentals of Database Systems, Elmasri, Navathe Foundations of Databases, Abiteboul, Hull, Vianu Data on the Web, Abiteboul, Buneman, Suciu ...
Physical Database Design and Performance
... empty fields Referential integrity–range control (and null value allowances) for foreign-key to primary-key match-ups Sarbanes-Oxley Act (SOX) legislates importance of financial data integrity ...
... empty fields Referential integrity–range control (and null value allowances) for foreign-key to primary-key match-ups Sarbanes-Oxley Act (SOX) legislates importance of financial data integrity ...
Database-lecture 10
... Example 1(continued) In this example: the sub query is used in the where clause. The example goal: to retrieve the ssn for the employees who have at least one dependent. ...
... Example 1(continued) In this example: the sub query is used in the where clause. The example goal: to retrieve the ssn for the employees who have at least one dependent. ...
Chapter 4
... Each column contains data about one attribute of an entity. This is equivalent to a field Copyright © 2012 Pearson Education, Inc. publishing as Prentice Hall ...
... Each column contains data about one attribute of an entity. This is equivalent to a field Copyright © 2012 Pearson Education, Inc. publishing as Prentice Hall ...
“User defined types and nested tables in object relational databases”
... designers, but may cause problems for some application developers creating queries to embed into their application. The usual implementation of OR features uses Object IDs (OIDs) to identify each tuple, a construct used, in particular, with nested tables. This suggests the vendor, at least in part, ...
... designers, but may cause problems for some application developers creating queries to embed into their application. The usual implementation of OR features uses Object IDs (OIDs) to identify each tuple, a construct used, in particular, with nested tables. This suggests the vendor, at least in part, ...
DATABASE SECURITY
... that renders the data unreadable by any program without the decryption key. There will be degradation in performance because of the time taken to decode it. It also protects the data transmitted over communication lines. ...
... that renders the data unreadable by any program without the decryption key. There will be degradation in performance because of the time taken to decode it. It also protects the data transmitted over communication lines. ...
Storage and Disks
... A: Not Programming Not programming big things.. Systems = Efficient and safe use of limited resources (e.g., disks) Efficient: resources should be shared, utilized as much as possible Safe: ...
... A: Not Programming Not programming big things.. Systems = Efficient and safe use of limited resources (e.g., disks) Efficient: resources should be shared, utilized as much as possible Safe: ...
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.