(A) Division of city into zones. In order to classify, regulate, restrict and separate the use of land, buildings and structures and to regulate and to limit the type, height and bulk of buildings and structures in the various districts and to regulate the areas of yards and other open areas abutting and between buildings and structures and to regulate the density of population, the city is divided into zones set forth in this title.
(B) Adoption of districts. The several zones and boundaries of the zones and each of them are established and adopted and are shown, delineated and designated on the Official Zoning Map of the city, which map, together with all notations, references, data, district boundaries and other information thereof, is attached hereto and made a part of the ordinance codified in this title and is hereby adopted.
(`78 Code, § 17.02.040.)