'Select count distinct' diaporamas de présentation

SQL ??? 5

SQL ??? 5. ??? ?????? ???? ??????? ????? ????????? ???? ????: ???? ????? m.emadi@nit.ac.ir. ???? ??? ? ??? SQL. ???? IBM ?? ??? 1970 ?? ????? ?????? ?????? ???? System R ???? ????? ??? ?? ??? ???? ?????? ???? ????? ?? ???? ???? ??? ????? ??????? ?? ???? ?? ????????? ??? ???? ???

1.63k views • 108 slides

SQL: Queries, Programming, Triggers

SQL: Queries, Programming, Triggers. Chapter 5. We now introduce SQL, the standard query language for relational DBS. Like relational algebra, an SQL query takes one or two input tables and returns one output table. Any RA query can also be formulated in SQL.

903 views • 81 slides

SQL: Queries, Constraints, Triggers

SQL: Queries, Constraints, Triggers. Chapter 5. R1. Example Instances. S1. We will use these instances of the Sailors and Reserves relations in our examples. If the key for the Reserves relation contained only the attributes sid and bid , how would the semantics differ?. S2.

498 views • 47 slides

SQL: Queries, Constraints, Triggers

SQL: Queries, Constraints, Triggers. Chapter 5. R1. Example Instances. S1. We will use these instances of the Sailors and Reserves relations in our examples. If the key for the Reserves relation contained only the attributes sid and bid , how would the semantics differ?. S2.

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Introduction to SQL

Introduction to SQL. Part III COSC 3480 Teaching Plan Part SQL in 45 Minutes (Chapter 5) Relational Algebra (Chapter 4.2) More on SQL (Chapter 5). R1. Example Instances. S1. We will use these instances of the Sailors and Reserves relations in our examples.

413 views • 41 slides

SQL: Queries, Programming, Triggers

SQL: Queries, Programming, Triggers. Chapter 5. R1. Example Instances. S1. We will use these instances of the Sailors and Reserves relations in our examples. If the key for the Reserves relation contained only the attributes sid and bid , how would the semantics differ?. S2.

496 views • 39 slides

Introduction to SQL and the Relational Model

Introduction to SQL and the Relational Model. Data Boot Camp! May 20, 2014 Michael Cafarella. Relational Databases. The most common kind is a relational database The software is called a Relational Database Management System (RDBMS)

570 views • 37 slides

SQL: Queries, Constraints, Triggers

SQL: Queries, Constraints, Triggers. Chapter 5. R1. Example Instances. S1. We will use these instances of the Sailors and Reserves relations in our examples. If the key for the Reserves relation contained only the attributes sid and bid , how would the semantics differ?. S2.

496 views • 36 slides

SQL: Queries, Constraints, Triggers

SQL: Queries, Constraints, Triggers. Content based on Chapter 5 Database Management Systems, (Third Edition), by Raghu Ramakrishnan and Johannes Gehrke. McGraw Hill, 2003. Example Instances. We will use these instances of the Sailors and Reserves relations in our examples.

439 views • 36 slides

375 views • 36 slides

SQL: Queries, Constraints, Triggers

SQL: Queries, Constraints, Triggers. Content based on Chapter 5 Database Management Systems, (Third Edition), by Raghu Ramakrishnan and Johannes Gehrke. McGraw Hill, 2003. Example Instances. We will use these instances of the Sailors and Reserves relations in our examples.

390 views • 36 slides

SQL: Queries, Programming, Triggers

SQL: Queries, Programming, Triggers. Chapter 5. Example Instances. R1. We will use these instances of the Sailors and Reserves relations in our examples. If the key for the Reserves relation contained only the attributes sid and bid , how would the semantics differ?. S1. S2.

446 views • 35 slides

SQL: Queries, Constraints, Triggers

SQL: Queries, Constraints, Triggers. 198:541 Rutgers University. R1. Example Instances. We will use these instances of the Sailors and Reserves relations in our examples. If the key for the Reserves relation contained only the attributes sid and bid , how would the semantics differ?. S1.

384 views • 35 slides

SQL: Queries, Constraints, Triggers

SQL: Queries, Constraints, Triggers. Chapter 5. Overview: Features of SQL. Data definition language: used to create, destroy, and modify tables and views. Data manipulation language: used to pose queries, and to insert, delete, and modify rows .

359 views • 33 slides

SQL: Queries, Programming, Triggers

SQL: Queries, Programming, Triggers. R1. Example Instances. S1. We will use these instances of the Sailors and Reserves relations in our examples. If the key for the Reserves relation contained only the attributes sid and bid , how would the semantics differ?. S2.

404 views • 32 slides

SQL: Queries, Programming, Triggers

SQL: Queries, Programming, Triggers. Chapter 5. R1. Example Instances. S1. We will use these instances of the Sailors and Reserves relations in our examples. If the key for the Reserves relation contained only the attributes sid and bid , how would the semantics differ?. S2.

324 views • 32 slides

SQL: korelisani podupit

496 views • 29 slides

384 views • 22 slides

SQL: The Query Language (Part II)

222 views • 10 slides

SQL: The Query Language (Part II)

105 views • 10 slides